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<div class="title">llfio_v2_xxx::storage_profile::storage_profile Struct Reference</div> </div>
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<p>A (possibly incomplet) profile of storage.
<a href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#details">More...</a></p>
<p><code>#include "storage_profile.hpp"</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:a9791351967d62e6a601bbb9868bcb5e6"><td class="memItemLeft" align="right" valign="top"><a id="a9791351967d62e6a601bbb9868bcb5e6"></a>
using </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a9791351967d62e6a601bbb9868bcb5e6">size_type</a> = size_t</td></tr>
<tr class="memdesc:a9791351967d62e6a601bbb9868bcb5e6"><td class="mdescLeft"> </td><td class="mdescRight">The size type. <br /></td></tr>
<tr class="separator:a9791351967d62e6a601bbb9868bcb5e6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a773c664906c70efa198bcc81bc92b973"><td class="memItemLeft" align="right" valign="top"><a id="a773c664906c70efa198bcc81bc92b973"></a>
using </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a773c664906c70efa198bcc81bc92b973">value_type</a> = <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item__erased.html">item_erased</a> &</td></tr>
<tr class="memdesc:a773c664906c70efa198bcc81bc92b973"><td class="mdescLeft"> </td><td class="mdescRight">Value type. <br /></td></tr>
<tr class="separator:a773c664906c70efa198bcc81bc92b973"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ada721cf6bb1fc91b0790d2a19569e541"><td class="memItemLeft" align="right" valign="top"><a id="ada721cf6bb1fc91b0790d2a19569e541"></a>
using </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#ada721cf6bb1fc91b0790d2a19569e541">reference</a> = <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item__erased.html">item_erased</a> &</td></tr>
<tr class="memdesc:ada721cf6bb1fc91b0790d2a19569e541"><td class="mdescLeft"> </td><td class="mdescRight">Reference type. <br /></td></tr>
<tr class="separator:ada721cf6bb1fc91b0790d2a19569e541"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a26ee0a5e5b9ac70ed6b056fe95ee2d59"><td class="memItemLeft" align="right" valign="top"><a id="a26ee0a5e5b9ac70ed6b056fe95ee2d59"></a>
using </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a26ee0a5e5b9ac70ed6b056fe95ee2d59">const_reference</a> = const <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item__erased.html">item_erased</a> &</td></tr>
<tr class="memdesc:a26ee0a5e5b9ac70ed6b056fe95ee2d59"><td class="mdescLeft"> </td><td class="mdescRight">Const reference type. <br /></td></tr>
<tr class="separator:a26ee0a5e5b9ac70ed6b056fe95ee2d59"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac72468c441bcfd2d3989381600f6c923"><td class="memItemLeft" align="right" valign="top"><a id="ac72468c441bcfd2d3989381600f6c923"></a>
using </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#ac72468c441bcfd2d3989381600f6c923">iterator</a> = <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item__erased.html">item_erased</a> *</td></tr>
<tr class="memdesc:ac72468c441bcfd2d3989381600f6c923"><td class="mdescLeft"> </td><td class="mdescRight">Iterator type. <br /></td></tr>
<tr class="separator:ac72468c441bcfd2d3989381600f6c923"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a45ebb67036d3c2ca572cae5607daf392"><td class="memItemLeft" align="right" valign="top"><a id="a45ebb67036d3c2ca572cae5607daf392"></a>
using </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a45ebb67036d3c2ca572cae5607daf392">const_iterator</a> = const <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item__erased.html">item_erased</a> *</td></tr>
<tr class="memdesc:a45ebb67036d3c2ca572cae5607daf392"><td class="mdescLeft"> </td><td class="mdescRight">Const iterator type. <br /></td></tr>
<tr class="separator:a45ebb67036d3c2ca572cae5607daf392"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a83312b218da0b17c6407fbedb902cb1d"><td class="memItemLeft" align="right" valign="top"><a id="a83312b218da0b17c6407fbedb902cb1d"></a>
using </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a83312b218da0b17c6407fbedb902cb1d">handle_type</a> = <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item__base.html#ae1026037f706015d2e10a545a64834c0">item_base::handle_type</a></td></tr>
<tr class="memdesc:a83312b218da0b17c6407fbedb902cb1d"><td class="mdescLeft"> </td><td class="mdescRight">The type of handle used for testing. <br /></td></tr>
<tr class="separator:a83312b218da0b17c6407fbedb902cb1d"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a6195ef7236d35269bc3fac5599528a08"><td class="memItemLeft" align="right" valign="top"><a id="a6195ef7236d35269bc3fac5599528a08"></a>
bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a6195ef7236d35269bc3fac5599528a08">empty</a> () const noexcept</td></tr>
<tr class="memdesc:a6195ef7236d35269bc3fac5599528a08"><td class="mdescLeft"> </td><td class="mdescRight">True if this storage profile is empty. <br /></td></tr>
<tr class="separator:a6195ef7236d35269bc3fac5599528a08"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad015cb71ff92fa291190c2dc55c7c7de"><td class="memItemLeft" align="right" valign="top"><a id="ad015cb71ff92fa291190c2dc55c7c7de"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a9791351967d62e6a601bbb9868bcb5e6">size_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#ad015cb71ff92fa291190c2dc55c7c7de">size</a> () const noexcept</td></tr>
<tr class="memdesc:ad015cb71ff92fa291190c2dc55c7c7de"><td class="mdescLeft"> </td><td class="mdescRight">Items in this storage profile. <br /></td></tr>
<tr class="separator:ad015cb71ff92fa291190c2dc55c7c7de"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4ceec137ccb252012d507cd9a962a490"><td class="memItemLeft" align="right" valign="top"><a id="a4ceec137ccb252012d507cd9a962a490"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a9791351967d62e6a601bbb9868bcb5e6">size_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4ceec137ccb252012d507cd9a962a490">max_size</a> () const noexcept</td></tr>
<tr class="memdesc:a4ceec137ccb252012d507cd9a962a490"><td class="mdescLeft"> </td><td class="mdescRight">Potential items in this storage profile. <br /></td></tr>
<tr class="separator:a4ceec137ccb252012d507cd9a962a490"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:abd2f5aca239fcd35a94a60db4d5bf133"><td class="memItemLeft" align="right" valign="top"><a id="abd2f5aca239fcd35a94a60db4d5bf133"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#ac72468c441bcfd2d3989381600f6c923">iterator</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#abd2f5aca239fcd35a94a60db4d5bf133">begin</a> () noexcept</td></tr>
<tr class="memdesc:abd2f5aca239fcd35a94a60db4d5bf133"><td class="mdescLeft"> </td><td class="mdescRight">Returns an iterator to the first item. <br /></td></tr>
<tr class="separator:abd2f5aca239fcd35a94a60db4d5bf133"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a578ca7ec4f41087374c57dc68607de97"><td class="memItemLeft" align="right" valign="top"><a id="a578ca7ec4f41087374c57dc68607de97"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#ac72468c441bcfd2d3989381600f6c923">iterator</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a578ca7ec4f41087374c57dc68607de97">end</a> () noexcept</td></tr>
<tr class="memdesc:a578ca7ec4f41087374c57dc68607de97"><td class="mdescLeft"> </td><td class="mdescRight">Returns an iterator to the last item. <br /></td></tr>
<tr class="separator:a578ca7ec4f41087374c57dc68607de97"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a10064029adf92a2b2fc97e8277a5ce3b"><td class="memItemLeft" align="right" valign="top"><a id="a10064029adf92a2b2fc97e8277a5ce3b"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a45ebb67036d3c2ca572cae5607daf392">const_iterator</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a10064029adf92a2b2fc97e8277a5ce3b">begin</a> () const noexcept</td></tr>
<tr class="memdesc:a10064029adf92a2b2fc97e8277a5ce3b"><td class="mdescLeft"> </td><td class="mdescRight">Returns an iterator to the first item. <br /></td></tr>
<tr class="separator:a10064029adf92a2b2fc97e8277a5ce3b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:afb2730a6c2872ae8a511be761a74e6c4"><td class="memItemLeft" align="right" valign="top"><a id="afb2730a6c2872ae8a511be761a74e6c4"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a45ebb67036d3c2ca572cae5607daf392">const_iterator</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#afb2730a6c2872ae8a511be761a74e6c4">end</a> () const noexcept</td></tr>
<tr class="memdesc:afb2730a6c2872ae8a511be761a74e6c4"><td class="mdescLeft"> </td><td class="mdescRight">Returns an iterator to the last item. <br /></td></tr>
<tr class="separator:afb2730a6c2872ae8a511be761a74e6c4"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4d7d2e7ae94312b9757d8a5c12724c0f"><td class="memItemLeft" align="right" valign="top"><a id="a4d7d2e7ae94312b9757d8a5c12724c0f"></a>
void </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> (std::istream &in, std::regex which=std::regex(".*"))</td></tr>
<tr class="memdesc:a4d7d2e7ae94312b9757d8a5c12724c0f"><td class="mdescLeft"> </td><td class="mdescRight">Read the matching items in the storage profile from in as YAML. <br /></td></tr>
<tr class="separator:a4d7d2e7ae94312b9757d8a5c12724c0f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af63e94ffbdb72bf6218cb4ba7c9a552b"><td class="memItemLeft" align="right" valign="top"><a id="af63e94ffbdb72bf6218cb4ba7c9a552b"></a>
void </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> (std::ostream &out, const std::regex &which=std::regex(".*"), size_t _indent=0, bool invert_match=false) const</td></tr>
<tr class="memdesc:af63e94ffbdb72bf6218cb4ba7c9a552b"><td class="mdescLeft"> </td><td class="mdescRight">Write the matching items from storage profile as YAML to out with the given indentation. <br /></td></tr>
<tr class="separator:af63e94ffbdb72bf6218cb4ba7c9a552b"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
Public Attributes</h2></td></tr>
<tr class="memitem:a2673f599a3a837abe8d03514d59e845c"><td class="memItemLeft" align="right" valign="top"><a id="a2673f599a3a837abe8d03514d59e845c"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< std::string > </td><td class="memItemRight" valign="bottom"><b>os_name</b> = {"system:os:name", &system::os}</td></tr>
<tr class="separator:a2673f599a3a837abe8d03514d59e845c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac0fd7584753593cb5499b3069e13d056"><td class="memItemLeft" align="right" valign="top"><a id="ac0fd7584753593cb5499b3069e13d056"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< std::string > </td><td class="memItemRight" valign="bottom"><b>os_ver</b> = {"system:os:ver", &system::os}</td></tr>
<tr class="separator:ac0fd7584753593cb5499b3069e13d056"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a612045451fb94d2921143bfc7d6cc575"><td class="memItemLeft" align="right" valign="top"><a id="a612045451fb94d2921143bfc7d6cc575"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< std::string > </td><td class="memItemRight" valign="bottom"><b>cpu_name</b> = {"system:cpu:name", &system::cpu}</td></tr>
<tr class="separator:a612045451fb94d2921143bfc7d6cc575"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab2c9c64343a7a5d1b627d4600193601f"><td class="memItemLeft" align="right" valign="top"><a id="ab2c9c64343a7a5d1b627d4600193601f"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< std::string > </td><td class="memItemRight" valign="bottom"><b>cpu_architecture</b> = {"system:cpu:architecture", &system::cpu}</td></tr>
<tr class="separator:ab2c9c64343a7a5d1b627d4600193601f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aec674f9bb82befe1f9988e743eabba3b"><td class="memItemLeft" align="right" valign="top"><a id="aec674f9bb82befe1f9988e743eabba3b"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned > </td><td class="memItemRight" valign="bottom"><b>cpu_physical_cores</b> = {"system:cpu:physical_cores", &system::cpu}</td></tr>
<tr class="separator:aec674f9bb82befe1f9988e743eabba3b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:accda92d5c8ff679c32218792b9933aeb"><td class="memItemLeft" align="right" valign="top"><a id="accda92d5c8ff679c32218792b9933aeb"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>mem_max_bandwidth</b> = {"system:mem:max_bandwidth", system::mem, "Main memory bandwidth when accessed sequentially (1 CPU core)"}</td></tr>
<tr class="separator:accda92d5c8ff679c32218792b9933aeb"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a95b44bf265801f0cbce2e5e3c6017966"><td class="memItemLeft" align="right" valign="top"><a id="a95b44bf265801f0cbce2e5e3c6017966"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>mem_min_bandwidth</b> = {"system:mem:min_bandwidth", system::mem, "Main memory bandwidth when 4Kb pages are accessed randomly (1 CPU core)"}</td></tr>
<tr class="separator:a95b44bf265801f0cbce2e5e3c6017966"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:afd256f7447d897d67d2117339b6b4ba3"><td class="memItemLeft" align="right" valign="top"><a id="afd256f7447d897d67d2117339b6b4ba3"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>mem_quantity</b> = {"system:mem:quantity", &system::mem}</td></tr>
<tr class="separator:afd256f7447d897d67d2117339b6b4ba3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a807a39d41640802c9c857693c7571633"><td class="memItemLeft" align="right" valign="top"><a id="a807a39d41640802c9c857693c7571633"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< float > </td><td class="memItemRight" valign="bottom"><b>mem_in_use</b> = {"system:mem:in_use", &system::mem}</td></tr>
<tr class="separator:a807a39d41640802c9c857693c7571633"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a53f7ea612f6a206e0690af1091646910"><td class="memItemLeft" align="right" valign="top"><a id="a53f7ea612f6a206e0690af1091646910"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned > </td><td class="memItemRight" valign="bottom"><b>clock_granularity</b> = {"system:timer:ns_per_tick", &system::clock_granularity}</td></tr>
<tr class="separator:a53f7ea612f6a206e0690af1091646910"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aed82185c960d98285f610aaaa5f1fd64"><td class="memItemLeft" align="right" valign="top"><a id="aed82185c960d98285f610aaaa5f1fd64"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned > </td><td class="memItemRight" valign="bottom"><b>clock_overhead</b> = {"system:timer:ns_overhead", &system::clock_granularity}</td></tr>
<tr class="separator:aed82185c960d98285f610aaaa5f1fd64"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a42c30f1e55c74f9c5343b63fca5cea4d"><td class="memItemLeft" align="right" valign="top"><a id="a42c30f1e55c74f9c5343b63fca5cea4d"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned > </td><td class="memItemRight" valign="bottom"><b>yield_overhead</b> = {"system:scheduler:ns_yield", &system::yield_overhead, "Nanoseconds to context switch a thread"}</td></tr>
<tr class="separator:a42c30f1e55c74f9c5343b63fca5cea4d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:acf09944b61a0e84f7d72dd4a87ffb76d"><td class="memItemLeft" align="right" valign="top"><a id="acf09944b61a0e84f7d72dd4a87ffb76d"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned > </td><td class="memItemRight" valign="bottom"><b>sleep_wake_overhead</b> = {"system:scheduler:ns_sleep_wake", &system::sleep_wake_overhead, "Nanoseconds to sleep and wake a thread"}</td></tr>
<tr class="separator:acf09944b61a0e84f7d72dd4a87ffb76d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a72eb6a03e4839c996c6f564023b55851"><td class="memItemLeft" align="right" valign="top"><a id="a72eb6a03e4839c996c6f564023b55851"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned > </td><td class="memItemRight" valign="bottom"><b>drop_filesystem_cache_support</b> = {"system:drop_filesystem_cache_support", &system::drop_filesystem_cache_support}</td></tr>
<tr class="separator:a72eb6a03e4839c996c6f564023b55851"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a5a515a8ee1d4cdc3c98b6d41ee282fba"><td class="memItemLeft" align="right" valign="top"><a id="a5a515a8ee1d4cdc3c98b6d41ee282fba"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< std::string > </td><td class="memItemRight" valign="bottom"><b>controller_type</b> = {"storage:controller:kind", &storage::device}</td></tr>
<tr class="separator:a5a515a8ee1d4cdc3c98b6d41ee282fba"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0e300d7284c629851be9670a257cd984"><td class="memItemLeft" align="right" valign="top"><a id="a0e300d7284c629851be9670a257cd984"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned > </td><td class="memItemRight" valign="bottom"><b>controller_max_transfer</b> = {"storage:controller:max_transfer", storage::device, "The maximum number of bytes the disk controller can transfer at once"}</td></tr>
<tr class="separator:a0e300d7284c629851be9670a257cd984"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af694347286b66f45e66b03d7825350d3"><td class="memItemLeft" align="right" valign="top"><a id="af694347286b66f45e66b03d7825350d3"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned > </td><td class="memItemRight" valign="bottom"><b>controller_max_buffers</b> = {"storage:controller:max_buffers", storage::device, "The maximum number of scatter-gather buffers the disk controller can <a class="el" href="classllfio__v2__xxx_1_1handle.html">handle</a>"}</td></tr>
<tr class="separator:af694347286b66f45e66b03d7825350d3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aabc4c76ae832bae66112f0f652a15dea"><td class="memItemLeft" align="right" valign="top"><a id="aabc4c76ae832bae66112f0f652a15dea"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< std::string > </td><td class="memItemRight" valign="bottom"><b>device_name</b> = {"storage:device:name", &storage::device}</td></tr>
<tr class="separator:aabc4c76ae832bae66112f0f652a15dea"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab602c4b6ebe5f30cce8f745cbafe7c53"><td class="memItemLeft" align="right" valign="top"><a id="ab602c4b6ebe5f30cce8f745cbafe7c53"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned > </td><td class="memItemRight" valign="bottom"><b>device_min_io_size</b> = {"storage:device:min_io_size", &storage::device}</td></tr>
<tr class="separator:ab602c4b6ebe5f30cce8f745cbafe7c53"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6200afd35c989f174f603f7803ae3b9e"><td class="memItemLeft" align="right" valign="top"><a id="a6200afd35c989f174f603f7803ae3b9e"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< <a class="el" href="classllfio__v2__xxx_1_1io__service.html#afa88ed41bd1ff94b78a4667e1befb76a">io_service::extent_type</a> > </td><td class="memItemRight" valign="bottom"><b>device_size</b> = {"storage:device:size", &storage::device}</td></tr>
<tr class="separator:a6200afd35c989f174f603f7803ae3b9e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a349ded127a1defc9606a3c5bd4d4f726"><td class="memItemLeft" align="right" valign="top"><a id="a349ded127a1defc9606a3c5bd4d4f726"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< std::string > </td><td class="memItemRight" valign="bottom"><b>fs_name</b> = {"storage:fs:name", &storage::fs}</td></tr>
<tr class="separator:a349ded127a1defc9606a3c5bd4d4f726"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac6e28bb3dec6b0531f7267a01d295486"><td class="memItemLeft" align="right" valign="top"><a id="ac6e28bb3dec6b0531f7267a01d295486"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< std::string > </td><td class="memItemRight" valign="bottom"><b>fs_config</b> = {"storage:fs:config", &storage::fs}</td></tr>
<tr class="separator:ac6e28bb3dec6b0531f7267a01d295486"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a97fdeb0183b87e87d595cfc9d93500da"><td class="memItemLeft" align="right" valign="top"><a id="a97fdeb0183b87e87d595cfc9d93500da"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< <a class="el" href="classllfio__v2__xxx_1_1io__service.html#afa88ed41bd1ff94b78a4667e1befb76a">io_service::extent_type</a> > </td><td class="memItemRight" valign="bottom"><b>fs_size</b> = {"storage:fs:size", &storage::fs}</td></tr>
<tr class="separator:a97fdeb0183b87e87d595cfc9d93500da"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4ae53650441ee5d65ab33175af262a39"><td class="memItemLeft" align="right" valign="top"><a id="a4ae53650441ee5d65ab33175af262a39"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< float > </td><td class="memItemRight" valign="bottom"><b>fs_in_use</b> = {"storage:fs:in_use", &storage::fs}</td></tr>
<tr class="separator:a4ae53650441ee5d65ab33175af262a39"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a7dda252a1376635a06a6d47f1584abdf"><td class="memItemLeft" align="right" valign="top"><a id="a7dda252a1376635a06a6d47f1584abdf"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< <a class="el" href="classllfio__v2__xxx_1_1io__service.html#afa88ed41bd1ff94b78a4667e1befb76a">io_service::extent_type</a> > </td><td class="memItemRight" valign="bottom"><b>atomic_rewrite_quantum</b> = {"concurrency:atomic_rewrite_quantum", concurrency::atomic_rewrite_quantum, "The i/o modify quantum guaranteed to be atomically visible to readers irrespective of rewrite quantity"}</td></tr>
<tr class="separator:a7dda252a1376635a06a6d47f1584abdf"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a41b8fcef40890ff14e802c2382a6e5d8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< <a class="el" href="classllfio__v2__xxx_1_1io__service.html#afa88ed41bd1ff94b78a4667e1befb76a">io_service::extent_type</a> > </td><td class="memItemRight" valign="bottom"><b>max_aligned_atomic_rewrite</b></td></tr>
<tr class="separator:a41b8fcef40890ff14e802c2382a6e5d8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a009c613344a42f0afc9301cfcb1d6578"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< <a class="el" href="classllfio__v2__xxx_1_1io__service.html#afa88ed41bd1ff94b78a4667e1befb76a">io_service::extent_type</a> > </td><td class="memItemRight" valign="bottom"><b>atomic_rewrite_offset_boundary</b></td></tr>
<tr class="separator:a009c613344a42f0afc9301cfcb1d6578"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6268321ec8dfee09952dcb8364e93c27"><td class="memItemLeft" align="right" valign="top"><a id="a6268321ec8dfee09952dcb8364e93c27"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned > </td><td class="memItemRight" valign="bottom"><b>read_nothing</b> = {"latency:read:nothing", latency::read_nothing, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> <a class="el" href="namespacellfio__v2__xxx.html#ad0fb15649a46da0d75b5797bfda8dc2e">zero</a> bytes"}</td></tr>
<tr class="separator:a6268321ec8dfee09952dcb8364e93c27"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aaf6683dae3b74185360d5b6b3cd01202"><td class="memItemLeft" align="right" valign="top"><a id="aaf6683dae3b74185360d5b6b3cd01202"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>read_qd1_min</b> = {"latency:read:qd1:min", latency::read_qd1, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 4Kb at a queue depth of 1 (min)"}</td></tr>
<tr class="separator:aaf6683dae3b74185360d5b6b3cd01202"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0f968e990ff1492c52e976da6e472f9d"><td class="memItemLeft" align="right" valign="top"><a id="a0f968e990ff1492c52e976da6e472f9d"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>read_qd1_mean</b> = {"latency:read:qd1:mean", latency::read_qd1, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 4Kb at a queue depth of 1 (arithmetic mean)"}</td></tr>
<tr class="separator:a0f968e990ff1492c52e976da6e472f9d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a46abd1f25c8e3209b58c45e5b019f787"><td class="memItemLeft" align="right" valign="top"><a id="a46abd1f25c8e3209b58c45e5b019f787"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>read_qd1_max</b> = {"latency:read:qd1:max", latency::read_qd1, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 4Kb at a queue depth of 1 (max)"}</td></tr>
<tr class="separator:a46abd1f25c8e3209b58c45e5b019f787"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2c36320756f2b5c7bd1a11118d9cd4f8"><td class="memItemLeft" align="right" valign="top"><a id="a2c36320756f2b5c7bd1a11118d9cd4f8"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>read_qd1_50</b> = {"latency:read:qd1:50%", latency::read_qd1, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 4Kb at a queue depth of 1 (50% of the time)"}</td></tr>
<tr class="separator:a2c36320756f2b5c7bd1a11118d9cd4f8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad9c9da18153377245b960558ff48b5bc"><td class="memItemLeft" align="right" valign="top"><a id="ad9c9da18153377245b960558ff48b5bc"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>read_qd1_95</b> = {"latency:read:qd1:95%", latency::read_qd1, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 4Kb at a queue depth of 1 (95% of the time)"}</td></tr>
<tr class="separator:ad9c9da18153377245b960558ff48b5bc"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af0ac2be1da6f65e1f607c7788ebbdd73"><td class="memItemLeft" align="right" valign="top"><a id="af0ac2be1da6f65e1f607c7788ebbdd73"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>read_qd1_99</b> = {"latency:read:qd1:99%", latency::read_qd1, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 4Kb at a queue depth of 1 (99% of the time)"}</td></tr>
<tr class="separator:af0ac2be1da6f65e1f607c7788ebbdd73"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa60d02636b5990bd66b560a67a31ae72"><td class="memItemLeft" align="right" valign="top"><a id="aa60d02636b5990bd66b560a67a31ae72"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>read_qd1_99999</b> = {"latency:read:qd1:99.999%", latency::read_qd1, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 4Kb at a queue depth of 1 (99.999% of the time)"}</td></tr>
<tr class="separator:aa60d02636b5990bd66b560a67a31ae72"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af8906857ccc0bc91120d1d05f632b91d"><td class="memItemLeft" align="right" valign="top"><a id="af8906857ccc0bc91120d1d05f632b91d"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>read_qd16_min</b> = {"latency:read:qd16:min", latency::read_qd16, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 4Kb at a queue depth of 16 (min)"}</td></tr>
<tr class="separator:af8906857ccc0bc91120d1d05f632b91d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:afd8951bd4ad42ee68229e6c9e43bafa1"><td class="memItemLeft" align="right" valign="top"><a id="afd8951bd4ad42ee68229e6c9e43bafa1"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>read_qd16_mean</b> = {"latency:read:qd16:mean", latency::read_qd16, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 4Kb at a queue depth of 16 (arithmetic mean)"}</td></tr>
<tr class="separator:afd8951bd4ad42ee68229e6c9e43bafa1"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa33ffe155d56a67eef70a4e10748e616"><td class="memItemLeft" align="right" valign="top"><a id="aa33ffe155d56a67eef70a4e10748e616"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>read_qd16_max</b> = {"latency:read:qd16:max", latency::read_qd16, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 4Kb at a queue depth of 16 (max)"}</td></tr>
<tr class="separator:aa33ffe155d56a67eef70a4e10748e616"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af4bd372d9c265d26eadb2f1b4a494c12"><td class="memItemLeft" align="right" valign="top"><a id="af4bd372d9c265d26eadb2f1b4a494c12"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>read_qd16_50</b> = {"latency:read:qd16:50%", latency::read_qd16, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 4Kb at a queue depth of 16 (50% of the time)"}</td></tr>
<tr class="separator:af4bd372d9c265d26eadb2f1b4a494c12"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1a35314c5647ff0e526de50891d3be7d"><td class="memItemLeft" align="right" valign="top"><a id="a1a35314c5647ff0e526de50891d3be7d"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>read_qd16_95</b> = {"latency:read:qd16:95%", latency::read_qd16, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 4Kb at a queue depth of 16 (95% of the time)"}</td></tr>
<tr class="separator:a1a35314c5647ff0e526de50891d3be7d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2315e230b1fabf9e1121d04fff05dc37"><td class="memItemLeft" align="right" valign="top"><a id="a2315e230b1fabf9e1121d04fff05dc37"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>read_qd16_99</b> = {"latency:read:qd16:99%", latency::read_qd16, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 4Kb at a queue depth of 16 (99% of the time)"}</td></tr>
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<tr class="memitem:a2487955267187932374815ab4822027b"><td class="memItemLeft" align="right" valign="top"><a id="a2487955267187932374815ab4822027b"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>read_qd16_99999</b> = {"latency:read:qd16:99.999%", latency::read_qd16, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 4Kb at a queue depth of 16 (99.999% of the time)"}</td></tr>
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<tr class="memitem:a8c4e9ef8e341a55c274048f8e0fc0296"><td class="memItemLeft" align="right" valign="top"><a id="a8c4e9ef8e341a55c274048f8e0fc0296"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned > </td><td class="memItemRight" valign="bottom"><b>write_nothing</b> = {"latency:write:nothing", latency::write_nothing, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> <a class="el" href="namespacellfio__v2__xxx.html#ad0fb15649a46da0d75b5797bfda8dc2e">zero</a> bytes"}</td></tr>
<tr class="separator:a8c4e9ef8e341a55c274048f8e0fc0296"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a06e404bc2d1dc0ecf94f8d9a9fc69972"><td class="memItemLeft" align="right" valign="top"><a id="a06e404bc2d1dc0ecf94f8d9a9fc69972"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>write_qd1_min</b> = {"latency:write:qd1:min", latency::write_qd1, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a queue depth of 1 (min)"}</td></tr>
<tr class="separator:a06e404bc2d1dc0ecf94f8d9a9fc69972"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a888a7743a781b850528458de2fcea559"><td class="memItemLeft" align="right" valign="top"><a id="a888a7743a781b850528458de2fcea559"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>write_qd1_mean</b> = {"latency:write:qd1:mean", latency::write_qd1, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a queue depth of 1 (arithmetic mean)"}</td></tr>
<tr class="separator:a888a7743a781b850528458de2fcea559"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a54bee32017d716c65c0a7efdad0ee1b5"><td class="memItemLeft" align="right" valign="top"><a id="a54bee32017d716c65c0a7efdad0ee1b5"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>write_qd1_max</b> = {"latency:write:qd1:max", latency::write_qd1, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a queue depth of 1 (max)"}</td></tr>
<tr class="separator:a54bee32017d716c65c0a7efdad0ee1b5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ace1bcc49772be69abd8d43c7d83c51c5"><td class="memItemLeft" align="right" valign="top"><a id="ace1bcc49772be69abd8d43c7d83c51c5"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>write_qd1_50</b> = {"latency:write:qd1:50%", latency::write_qd1, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a queue depth of 1 (50% of the time)"}</td></tr>
<tr class="separator:ace1bcc49772be69abd8d43c7d83c51c5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2276f3a9cb565d52b6ee778aeec060d5"><td class="memItemLeft" align="right" valign="top"><a id="a2276f3a9cb565d52b6ee778aeec060d5"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>write_qd1_95</b> = {"latency:write:qd1:95%", latency::write_qd1, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a queue depth of 1 (95% of the time)"}</td></tr>
<tr class="separator:a2276f3a9cb565d52b6ee778aeec060d5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae28eeb863bc8f82ba4882e207d599bec"><td class="memItemLeft" align="right" valign="top"><a id="ae28eeb863bc8f82ba4882e207d599bec"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>write_qd1_99</b> = {"latency:write:qd1:99%", latency::write_qd1, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a queue depth of 1 (99% of the time)"}</td></tr>
<tr class="separator:ae28eeb863bc8f82ba4882e207d599bec"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad774e9a30fc6ebd9e470309c72087f36"><td class="memItemLeft" align="right" valign="top"><a id="ad774e9a30fc6ebd9e470309c72087f36"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>write_qd1_99999</b> = {"latency:write:qd1:99.999%", latency::write_qd1, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a queue depth of 1 (99.999% of the time)"}</td></tr>
<tr class="separator:ad774e9a30fc6ebd9e470309c72087f36"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac9f186c0dee82daaebf7b880e615efb0"><td class="memItemLeft" align="right" valign="top"><a id="ac9f186c0dee82daaebf7b880e615efb0"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>write_qd16_min</b> = {"latency:write:qd16:min", latency::write_qd16, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a queue depth of 16 (min)"}</td></tr>
<tr class="separator:ac9f186c0dee82daaebf7b880e615efb0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:adec0a74a4c294c7e38cd65a1799ba741"><td class="memItemLeft" align="right" valign="top"><a id="adec0a74a4c294c7e38cd65a1799ba741"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>write_qd16_mean</b> = {"latency:write:qd16:mean", latency::write_qd16, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a queue depth of 16 (arithmetic mean)"}</td></tr>
<tr class="separator:adec0a74a4c294c7e38cd65a1799ba741"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a20d71bd98a2dc4db195adbf6fd50bc17"><td class="memItemLeft" align="right" valign="top"><a id="a20d71bd98a2dc4db195adbf6fd50bc17"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>write_qd16_max</b> = {"latency:write:qd16:max", latency::write_qd16, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a queue depth of 16 (max)"}</td></tr>
<tr class="separator:a20d71bd98a2dc4db195adbf6fd50bc17"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a241f0cdd60088ce514b71f460dd555f4"><td class="memItemLeft" align="right" valign="top"><a id="a241f0cdd60088ce514b71f460dd555f4"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>write_qd16_50</b> = {"latency:write:qd16:50%", latency::write_qd16, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a queue depth of 16 (50% of the time)"}</td></tr>
<tr class="separator:a241f0cdd60088ce514b71f460dd555f4"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af7beaacfc3e7e47ef2392dfeac421b5d"><td class="memItemLeft" align="right" valign="top"><a id="af7beaacfc3e7e47ef2392dfeac421b5d"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>write_qd16_95</b> = {"latency:write:qd16:95%", latency::write_qd16, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a queue depth of 16 (95% of the time)"}</td></tr>
<tr class="separator:af7beaacfc3e7e47ef2392dfeac421b5d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa279739048f7e2ef84cee6dbf4f27d74"><td class="memItemLeft" align="right" valign="top"><a id="aa279739048f7e2ef84cee6dbf4f27d74"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>write_qd16_99</b> = {"latency:write:qd16:99%", latency::write_qd16, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a queue depth of 16 (99% of the time)"}</td></tr>
<tr class="separator:aa279739048f7e2ef84cee6dbf4f27d74"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:abaa22b10dc7620d7b8a5bc43dc0a1952"><td class="memItemLeft" align="right" valign="top"><a id="abaa22b10dc7620d7b8a5bc43dc0a1952"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>write_qd16_99999</b> = {"latency:write:qd16:99.999%", latency::write_qd16, "The nanoseconds to <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a queue depth of 16 (99.999% of the time)"}</td></tr>
<tr class="separator:abaa22b10dc7620d7b8a5bc43dc0a1952"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:acab0c98c93149616bddb937fcddeafef"><td class="memItemLeft" align="right" valign="top"><a id="acab0c98c93149616bddb937fcddeafef"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>readwrite_qd4_min</b> = {"latency:readwrite:qd4:min", latency::readwrite_qd4, "The nanoseconds to 75% <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 25% <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a total queue depth of 4 (min)"}</td></tr>
<tr class="separator:acab0c98c93149616bddb937fcddeafef"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4cfa77a5b44e98627c6027c5104cc699"><td class="memItemLeft" align="right" valign="top"><a id="a4cfa77a5b44e98627c6027c5104cc699"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>readwrite_qd4_mean</b> = {"latency:readwrite:qd4:mean", latency::readwrite_qd4, "The nanoseconds to 75% <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 25% <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a total queue depth of 4 (arithmetic mean)"}</td></tr>
<tr class="separator:a4cfa77a5b44e98627c6027c5104cc699"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a222ad22d9198707c555930345eff84ed"><td class="memItemLeft" align="right" valign="top"><a id="a222ad22d9198707c555930345eff84ed"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>readwrite_qd4_max</b> = {"latency:readwrite:qd4:max", latency::readwrite_qd4, "The nanoseconds to 75% <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 25% <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a total queue depth of 4 (max)"}</td></tr>
<tr class="separator:a222ad22d9198707c555930345eff84ed"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a783d8c842e037ee85754d52af149cdcb"><td class="memItemLeft" align="right" valign="top"><a id="a783d8c842e037ee85754d52af149cdcb"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>readwrite_qd4_50</b> = {"latency:readwrite:qd4:50%", latency::readwrite_qd4, "The nanoseconds to 75% <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 25% <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a total queue depth of 4 (50% of the time)"}</td></tr>
<tr class="separator:a783d8c842e037ee85754d52af149cdcb"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae8860b3934d76d9e0b1d6a3eadd9676b"><td class="memItemLeft" align="right" valign="top"><a id="ae8860b3934d76d9e0b1d6a3eadd9676b"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>readwrite_qd4_95</b> = {"latency:readwrite:qd4:95%", latency::readwrite_qd4, "The nanoseconds to 75% <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 25% <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a total queue depth of 4 (95% of the time)"}</td></tr>
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<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>readwrite_qd4_99</b> = {"latency:readwrite:qd4:99%", latency::readwrite_qd4, "The nanoseconds to 75% <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 25% <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a total queue depth of 4 (99% of the time)"}</td></tr>
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<tr class="memitem:a303fe2641c3c75488b11747d20907574"><td class="memItemLeft" align="right" valign="top"><a id="a303fe2641c3c75488b11747d20907574"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>readwrite_qd4_99999</b> = {"latency:readwrite:qd4:99.999%", latency::readwrite_qd4, "The nanoseconds to 75% <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#a4d7d2e7ae94312b9757d8a5c12724c0f">read</a> 25% <a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1storage__profile.html#af63e94ffbdb72bf6218cb4ba7c9a552b">write</a> 4Kb at a total queue depth of 4 (99.999% of the time)"}</td></tr>
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<tr class="memitem:aa417c1a68ed3072ea3c5fa6c604c129a"><td class="memItemLeft" align="right" valign="top"><a id="aa417c1a68ed3072ea3c5fa6c604c129a"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>create_file_warm_racefree_0b</b> = {"response_time:race_free:warm_cache:create_file:0b", response_time::traversal_warm_racefree_0b, "The average nanoseconds to create a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> (warm cache, race free)"}</td></tr>
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<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>enumerate_file_warm_racefree_0b</b> = {"response_time:race_free:warm_cache:enumerate_file:0b", response_time::traversal_warm_racefree_0b, "The average nanoseconds to enumerate a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> (warm cache, race free)"}</td></tr>
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<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>open_file_read_warm_racefree_0b</b> = {"response_time:race_free:warm_cache:open_file_read:0b", response_time::traversal_warm_racefree_0b, "The average nanoseconds to open a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> for reading (warm cache, race free)"}</td></tr>
<tr class="separator:a799a4802bc79900b591bc3227588c264"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a220be32bea5fce7b164740ed6299f221"><td class="memItemLeft" align="right" valign="top"><a id="a220be32bea5fce7b164740ed6299f221"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>open_file_write_warm_racefree_0b</b> = {"response_time:race_free:warm_cache:open_file_write:0b", response_time::traversal_warm_racefree_0b, "The average nanoseconds to open a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> for writing (warm cache, race free)"}</td></tr>
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<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>delete_file_warm_racefree_0b</b> = {"response_time:race_free:warm_cache:delete_file:0b", response_time::traversal_warm_racefree_0b, "The average nanoseconds to delete a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> (warm cache, race free)"}</td></tr>
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<tr class="memitem:aeab36fcf8c59f75987aba182ac46638e"><td class="memItemLeft" align="right" valign="top"><a id="aeab36fcf8c59f75987aba182ac46638e"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>create_file_warm_nonracefree_0b</b> = {"response_time:non_race_free:warm_cache:create_file:0b", response_time::traversal_warm_nonracefree_0b, "The average nanoseconds to create a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> (warm cache, non race free)"}</td></tr>
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<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>enumerate_file_warm_nonracefree_0b</b> = {"response_time:non_race_free:warm_cache:enumerate_file:0b", response_time::traversal_warm_nonracefree_0b, "The average nanoseconds to enumerate a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> (warm cache, non race free)"}</td></tr>
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<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>open_file_read_warm_nonracefree_0b</b> = {"response_time:non_race_free:warm_cache:open_file_read:0b", response_time::traversal_warm_nonracefree_0b, "The average nanoseconds to open a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> for reading (warm cache, non race free)"}</td></tr>
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<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>open_file_write_warm_nonracefree_0b</b> = {"response_time:non_race_free:warm_cache:open_file_write:0b", response_time::traversal_warm_nonracefree_0b, "The average nanoseconds to open a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> for writing (warm cache, non race free)"}</td></tr>
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<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>delete_file_warm_nonracefree_0b</b> = {"response_time:non_race_free:warm_cache:delete_file:0b", response_time::traversal_warm_nonracefree_0b, "The average nanoseconds to delete a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> (warm cache, non race free)"}</td></tr>
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<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>create_file_cold_racefree_0b</b> = {"response_time:race_free:cold_cache:create_file:0b", response_time::traversal_cold_racefree_0b, "The average nanoseconds to create a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> (cold cache, race free)"}</td></tr>
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<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>enumerate_file_cold_racefree_0b</b> = {"response_time:race_free:cold_cache:enumerate_file:0b", response_time::traversal_cold_racefree_0b, "The average nanoseconds to enumerate a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> (cold cache, race free)"}</td></tr>
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<tr class="memitem:ab3b3aa3747cfb1e2e2890ee99003c087"><td class="memItemLeft" align="right" valign="top"><a id="ab3b3aa3747cfb1e2e2890ee99003c087"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>open_file_read_cold_racefree_0b</b> = {"response_time:race_free:cold_cache:open_file_read:0b", response_time::traversal_cold_racefree_0b, "The average nanoseconds to open a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> for reading (cold cache, race free)"}</td></tr>
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<tr class="memitem:a76ce22e1d0cf3f799c4766e90719a92a"><td class="memItemLeft" align="right" valign="top"><a id="a76ce22e1d0cf3f799c4766e90719a92a"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>open_file_write_cold_racefree_0b</b> = {"response_time:race_free:cold_cache:open_file_write:0b", response_time::traversal_cold_racefree_0b, "The average nanoseconds to open a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> for writing (cold cache, race free)"}</td></tr>
<tr class="separator:a76ce22e1d0cf3f799c4766e90719a92a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9dba1344070b4a6175e8cae6c4f1347d"><td class="memItemLeft" align="right" valign="top"><a id="a9dba1344070b4a6175e8cae6c4f1347d"></a>
<a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a>< unsigned long long > </td><td class="memItemRight" valign="bottom"><b>delete_file_cold_racefree_0b</b> = {"response_time:race_free:cold_cache:delete_file:0b", response_time::traversal_cold_racefree_0b, "The average nanoseconds to delete a 0 byte <a class="el" href="namespacellfio__v2__xxx.html#af31a062639499a79ef5cc8aed16ba65d">file</a> (cold cache, race free)"}</td></tr>
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</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>A (possibly incomplet) profile of storage. </p>
</div><h2 class="groupheader">Member Data Documentation</h2>
<a id="a009c613344a42f0afc9301cfcb1d6578"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a009c613344a42f0afc9301cfcb1d6578">◆ </a></span>atomic_rewrite_offset_boundary</h2>
<div class="memitem">
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<td class="memname"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a><<a class="el" href="classllfio__v2__xxx_1_1io__service.html#afa88ed41bd1ff94b78a4667e1befb76a">io_service::extent_type</a>> llfio_v2_xxx::storage_profile::storage_profile::atomic_rewrite_offset_boundary</td>
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</div><div class="memdoc">
<b>Initial value:</b><div class="fragment"><div class="line">= {<span class="stringliteral">"concurrency:atomic_rewrite_offset_boundary"</span>, concurrency::atomic_rewrite_offset_boundary, <span class="stringliteral">"The multiple of offset in a file where update atomicity breaks, so if you wrote 4096 bytes at a 512 offset and "</span></div><div class="line"> <span class="stringliteral">"this value was 4096, your write would tear at 3584 because all writes would tear on a 4096 offset multiple. "</span></div><div class="line"> <span class="stringliteral">"Linux has a famously broken kernel i/o design which causes this value to be a page multiple, except on "</span></div><div class="line"> <span class="stringliteral">"filing systems which take special measures to work around it. Windows NT appears to lose all atomicity as soon as "</span></div><div class="line"> <span class="stringliteral">"an i/o straddles a 4096 file offset multiple and DMA suddenly goes into many 64 byte cache lines :(, so if "</span></div><div class="line"> <span class="stringliteral">"this value is less than max_aligned_atomic_rewrite and some multiple of the CPU cache line size then this is "</span></div><div class="line"> <span class="stringliteral">"what has happened."</span>}</div></div><!-- fragment -->
</div>
</div>
<a id="a41b8fcef40890ff14e802c2382a6e5d8"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a41b8fcef40890ff14e802c2382a6e5d8">◆ </a></span>max_aligned_atomic_rewrite</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
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<td class="memname"><a class="el" href="structllfio__v2__xxx_1_1storage__profile_1_1item.html">item</a><<a class="el" href="classllfio__v2__xxx_1_1io__service.html#afa88ed41bd1ff94b78a4667e1befb76a">io_service::extent_type</a>> llfio_v2_xxx::storage_profile::storage_profile::max_aligned_atomic_rewrite</td>
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</div><div class="memdoc">
<b>Initial value:</b><div class="fragment"><div class="line">= {<span class="stringliteral">"concurrency:max_aligned_atomic_rewrite"</span>, concurrency::atomic_rewrite_quantum,</div><div class="line"> <span class="stringliteral">"The maximum single aligned i/o modify quantity atomically visible to readers (can be [potentially unreliably] much larger than atomic_rewrite_quantum). "</span></div><div class="line"> <span class="stringliteral">"A very common value on modern hardware with direct i/o thanks to PCIe DMA is 4096, don't trust values higher than this because of potentially discontiguous memory page mapping."</span>}</div></div><!-- fragment -->
</div>
</div>
<hr/>The documentation for this struct was generated from the following file:<ul>
<li>include/llfio/v2.0/<a class="el" href="storage__profile_8hpp.html">storage_profile.hpp</a></li>
</ul>
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