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authorxmujay <xmujay@gmail.com>2013-06-25 18:55:38 +0400
committerxmujay <xmujay@gmail.com>2013-06-25 18:55:38 +0400
commit5e1b7a7eb314fa0e4bf7e4350bd61250ec6a2769 (patch)
tree9106c3f34c2617cc8a93ee99e314ec1ea775939b /server_status_variables.php
parentef1aacce489232a3932a6f6c9304a4f0a2ccffc4 (diff)
refactor server_status_variables.php
Diffstat (limited to 'server_status_variables.php')
-rw-r--r--server_status_variables.php720
1 files changed, 5 insertions, 715 deletions
diff --git a/server_status_variables.php b/server_status_variables.php
index f96088c5a3..6f83e02b20 100644
--- a/server_status_variables.php
+++ b/server_status_variables.php
@@ -9,6 +9,8 @@
require_once 'libraries/common.inc.php';
require_once 'libraries/server_common.inc.php';
require_once 'libraries/ServerStatusData.class.php';
+require_once 'libraries/server_status_variables.lib.php';
+
if (PMA_DRIZZLE) {
$server_master_status = false;
$server_slave_status = false;
@@ -44,723 +46,11 @@ $scripts->addFile('server_status_sorter.js');
$response->addHTML('<div>');
$response->addHTML($ServerStatusData->getMenuHtml());
-$response->addHTML(PMA_getFilterHtml($ServerStatusData));
-$response->addHTML(PMA_getLinkSuggestionsHtml($ServerStatusData));
-$response->addHTML(PMA_getVariablesTableHtml($ServerStatusData));
+$response->addHTML(PMA_getHtmlForFilter($ServerStatusData));
+$response->addHTML(PMA_getHtmlForLinkSuggestions($ServerStatusData));
+$response->addHTML(PMA_getHtmlForVariablesTable($ServerStatusData));
$response->addHTML('</div>');
exit;
-/**
- * Returns the html for the list filter
- *
- * @param Object $ServerStatusData An instance of the PMA_ServerStatusData class
- *
- * @return string
- */
-function PMA_getFilterHtml($ServerStatusData)
-{
- $filterAlert = '';
- if (! empty($_REQUEST['filterAlert'])) {
- $filterAlert = ' checked="checked"';
- }
- $filterText = '';
- if (! empty($_REQUEST['filterText'])) {
- $filterText = htmlspecialchars($_REQUEST['filterText']);
- }
- $dontFormat = '';
- if (! empty($_REQUEST['dontFormat'])) {
- $dontFormat = ' checked="checked"';
- }
-
- $retval = '';
- $retval .= '<fieldset id="tableFilter">';
- $retval .= '<legend>' . __('Filters') . '</legend>';
- $retval .= '<form action="server_status_variables.php?' . PMA_generate_common_url() . '">';
- $retval .= '<input type="submit" value="' . __('Refresh') . '" />';
- $retval .= '<div class="formelement">';
- $retval .= '<label for="filterText">' . __('Containing the word:') . '</label>';
- $retval .= '<input name="filterText" type="text" id="filterText" '
- . 'style="vertical-align: baseline;" value="' . $filterText . '" />';
- $retval .= '</div>';
- $retval .= '<div class="formelement">';
- $retval .= '<input' . $filterAlert . ' type="checkbox" name="filterAlert" id="filterAlert" />';
- $retval .= '<label for="filterAlert">';
- $retval .= __('Show only alert values');
- $retval .= '</label>';
- $retval .= '</div>';
- $retval .= '<div class="formelement">';
- $retval .= '<select id="filterCategory" name="filterCategory">';
- $retval .= '<option value="">' . __('Filter by category…') . '</option>';
-
- foreach ($ServerStatusData->sections as $section_id => $section_name) {
- if (isset($ServerStatusData->categoryUsed[$section_id])) {
- if (! empty($_REQUEST['filterCategory'])
- && $_REQUEST['filterCategory'] == $section_id
- ) {
- $selected = ' selected="selected"';
- } else {
- $selected = '';
- }
- $retval .= '<option' . $selected . ' value="' . $section_id. '">';
- $retval .= htmlspecialchars($section_name) . '</option>';
- }
- }
- $retval .= '</select>';
- $retval .= '</div>';
- $retval .= '<div class="formelement">';
- $retval .= '<input' . $dontFormat . ' type="checkbox" name="dontFormat" id="dontFormat" />';
- $retval .= '<label for="dontFormat">';
- $retval .= __('Show unformatted values');
- $retval .= '</label>';
- $retval .= '</div>';
- $retval .= '</form>';
- $retval .= '</fieldset>';
-
- return $retval;
-}
-
-/**
- * Prints the suggestion links
- *
- * @param Object $ServerStatusData An instance of the PMA_ServerStatusData class
- *
- * @return string
- */
-function PMA_getLinkSuggestionsHtml($ServerStatusData)
-{
- $retval = '<div id="linkSuggestions" class="defaultLinks" style="display:none">';
- $retval .= '<p class="notice">' . __('Related links:');
- foreach ($ServerStatusData->links as $section_name => $section_links) {
- $retval .= '<span class="status_' . $section_name . '"> ';
- $i=0;
- foreach ($section_links as $link_name => $link_url) {
- if ($i > 0) {
- $retval .= ', ';
- }
- if ('doc' == $link_name) {
- $retval .= PMA_Util::showMySQLDocu($link_url, $link_url);
- } else {
- $retval .= '<a href="' . $link_url . '">' . $link_name . '</a>';
- }
- $i++;
- }
- $retval .= '</span>';
- }
- unset($link_url, $link_name, $i);
- $retval .= '</p>';
- $retval .= '</div>';
-
- return $retval;
-}
-
-/**
- * Returns a table with variables information
- *
- * @param Object $ServerStatusData An instance of the PMA_ServerStatusData class
- *
- * @return string
- */
-function PMA_getVariablesTableHtml($ServerStatusData)
-{
- $retval = '';
- $strShowStatus = PMA_getStatusVariablesDescriptions();
- /**
- * define some alerts
- */
- // name => max value before alert
- $alerts = array(
- // lower is better
- // variable => max value
- 'Aborted_clients' => 0,
- 'Aborted_connects' => 0,
-
- 'Binlog_cache_disk_use' => 0,
-
- 'Created_tmp_disk_tables' => 0,
-
- 'Handler_read_rnd' => 0,
- 'Handler_read_rnd_next' => 0,
-
- 'Innodb_buffer_pool_pages_dirty' => 0,
- 'Innodb_buffer_pool_reads' => 0,
- 'Innodb_buffer_pool_wait_free' => 0,
- 'Innodb_log_waits' => 0,
- 'Innodb_row_lock_time_avg' => 10, // ms
- 'Innodb_row_lock_time_max' => 50, // ms
- 'Innodb_row_lock_waits' => 0,
-
- 'Slow_queries' => 0,
- 'Delayed_errors' => 0,
- 'Select_full_join' => 0,
- 'Select_range_check' => 0,
- 'Sort_merge_passes' => 0,
- 'Opened_tables' => 0,
- 'Table_locks_waited' => 0,
- 'Qcache_lowmem_prunes' => 0,
-
- 'Qcache_free_blocks' => isset($ServerStatusData->server_status['Qcache_total_blocks'])
- ? $ServerStatusData->server_status['Qcache_total_blocks'] / 5 : 0,
- 'Slow_launch_threads' => 0,
-
- // depends on Key_read_requests
- // normaly lower then 1:0.01
- 'Key_reads' => isset($ServerStatusData->status['Key_read_requests'])
- ? (0.01 * $ServerStatusData->status['Key_read_requests']) : 0,
- // depends on Key_write_requests
- // normaly nearly 1:1
- 'Key_writes' => isset($ServerStatusData->status['Key_write_requests'])
- ? (0.9 * $ServerStatusData->status['Key_write_requests']) : 0,
-
- 'Key_buffer_fraction' => 0.5,
-
- // alert if more than 95% of thread cache is in use
- 'Threads_cached' => isset($ServerStatusData->variables['thread_cache_size'])
- ? 0.95 * $ServerStatusData->variables['thread_cache_size'] : 0
-
- // higher is better
- // variable => min value
- //'Handler read key' => '> ',
- );
-
- $retval .= '<table class="data sortable noclick" id="serverstatusvariables">';
- $retval .= '<col class="namecol" />';
- $retval .= '<col class="valuecol" />';
- $retval .= '<col class="descrcol" />';
- $retval .= '<thead>';
- $retval .= '<tr>';
- $retval .= '<th>' . __('Variable') . '</th>';
- $retval .= '<th>' . __('Value') . '</th>';
- $retval .= '<th>' . __('Description') . '</th>';
- $retval .= '</tr>';
- $retval .= '</thead>';
- $retval .= '<tbody>';
-
- $odd_row = false;
- foreach ($ServerStatusData->status as $name => $value) {
- $odd_row = !$odd_row;
- $retval .= '<tr class="' . ($odd_row ? 'odd' : 'even')
- . (isset($ServerStatusData->allocationMap[$name])?' s_' . $ServerStatusData->allocationMap[$name] : '')
- . '">';
-
- $retval .= '<th class="name">';
- $retval .= htmlspecialchars(str_replace('_', ' ', $name));
- /* Fields containing % are calculated, they can not be described in MySQL documentation */
- if (strpos($name, '%') === false) {
- $retval .= PMA_Util::showMySQLDocu(
- 'server-status-variables',
- 'server-status-variables',
- false,
- 'statvar_' . $name
- );
- }
- $retval .= '</th>';
-
- $retval .= '<td class="value"><span class="formatted">';
- if (isset($alerts[$name])) {
- if ($value > $alerts[$name]) {
- $retval .= '<span class="attention">';
- } else {
- $retval .= '<span class="allfine">';
- }
- }
- if ('%' === substr($name, -1, 1)) {
- $retval .= htmlspecialchars(PMA_Util::formatNumber($value, 0, 2)) . ' %';
- } elseif (strpos($name, 'Uptime') !== false) {
- $retval .= htmlspecialchars(
- PMA_Util::timespanFormat($value)
- );
- } elseif (is_numeric($value) && $value > 1000) {
- $retval .= '<abbr title="'
- // makes available the raw value as a title
- . htmlspecialchars(PMA_Util::formatNumber($value, 0))
- . '">'
- . htmlspecialchars(PMA_Util::formatNumber($value, 3, 1))
- . '</abbr>';
- } elseif (is_numeric($value)) {
- $retval .= htmlspecialchars(PMA_Util::formatNumber($value, 3, 1));
- } else {
- $retval .= htmlspecialchars($value);
- }
- if (isset($alerts[$name])) {
- $retval .= '</span>';
- }
- $retval .= '</span>';
- $retval .= '<span style="display:none;" class="original">';
- $retval .= $value;
- $retval .= '</span>';
- $retval .= '</td>';
- $retval .= '<td class="descr">';
-
- if (isset($strShowStatus[$name])) {
- $retval .= $strShowStatus[$name];
- }
-
- if (isset($ServerStatusData->links[$name])) {
- foreach ($ServerStatusData->links[$name] as $link_name => $link_url) {
- if ('doc' == $link_name) {
- $retval .= PMA_Util::showMySQLDocu($link_url, $link_url);
- } else {
- $retval .= ' <a href="' . $link_url . '">' . $link_name . '</a>';
- }
- }
- unset($link_url, $link_name);
- }
- $retval .= '</td>';
- $retval .= '</tr>';
- }
- $retval .= '</tbody>';
- $retval .= '</table>';
-
- return $retval;
-}
-
-/**
- * Returns a list of variable descriptions
- *
- * @return array
- */
-function PMA_getStatusVariablesDescriptions()
-{
- /**
- * Messages are built using the message name
- */
- return array(
- 'Aborted_clients' => __(
- 'The number of connections that were aborted because the client died'
- . ' without closing the connection properly.'
- ),
- 'Aborted_connects' => __(
- 'The number of failed attempts to connect to the MySQL server.'
- ),
- 'Binlog_cache_disk_use' => __(
- 'The number of transactions that used the temporary binary log cache'
- . ' but that exceeded the value of binlog_cache_size and used a'
- . ' temporary file to store statements from the transaction.'
- ),
- 'Binlog_cache_use' => __(
- 'The number of transactions that used the temporary binary log cache.'
- ),
- 'Connections' => __(
- 'The number of connection attempts (successful or not)'
- . ' to the MySQL server.'
- ),
- 'Created_tmp_disk_tables' => __(
- 'The number of temporary tables on disk created automatically by'
- . ' the server while executing statements. If'
- . ' Created_tmp_disk_tables is big, you may want to increase the'
- . ' tmp_table_size value to cause temporary tables to be'
- . ' memory-based instead of disk-based.'
- ),
- 'Created_tmp_files' => __(
- 'How many temporary files mysqld has created.'
- ),
- 'Created_tmp_tables' => __(
- 'The number of in-memory temporary tables created automatically'
- . ' by the server while executing statements.'
- ),
- 'Delayed_errors' => __(
- 'The number of rows written with INSERT DELAYED for which some'
- . ' error occurred (probably duplicate key).'
- ),
- 'Delayed_insert_threads' => __(
- 'The number of INSERT DELAYED handler threads in use. Every'
- . ' different table on which one uses INSERT DELAYED gets'
- . ' its own thread.'
- ),
- 'Delayed_writes' => __(
- 'The number of INSERT DELAYED rows written.'
- ),
- 'Flush_commands' => __(
- 'The number of executed FLUSH statements.'
- ),
- 'Handler_commit' => __(
- 'The number of internal COMMIT statements.'
- ),
- 'Handler_delete' => __(
- 'The number of times a row was deleted from a table.'
- ),
- 'Handler_discover' => __(
- 'The MySQL server can ask the NDB Cluster storage engine if it'
- . ' knows about a table with a given name. This is called discovery.'
- . ' Handler_discover indicates the number of time tables have been'
- . ' discovered.'
- ),
- 'Handler_read_first' => __(
- 'The number of times the first entry was read from an index. If this'
- . ' is high, it suggests that the server is doing a lot of full'
- . ' index scans; for example, SELECT col1 FROM foo, assuming that'
- . ' col1 is indexed.'
- ),
- 'Handler_read_key' => __(
- 'The number of requests to read a row based on a key. If this is'
- . ' high, it is a good indication that your queries and tables'
- . ' are properly indexed.'
- ),
- 'Handler_read_next' => __(
- 'The number of requests to read the next row in key order. This is'
- . ' incremented if you are querying an index column with a range'
- . ' constraint or if you are doing an index scan.'
- ),
- 'Handler_read_prev' => __(
- 'The number of requests to read the previous row in key order.'
- . ' This read method is mainly used to optimize ORDER BY … DESC.'
- ),
- 'Handler_read_rnd' => __(
- 'The number of requests to read a row based on a fixed position.'
- . ' This is high if you are doing a lot of queries that require'
- . ' sorting of the result. You probably have a lot of queries that'
- . ' require MySQL to scan whole tables or you have joins that'
- . ' don\'t use keys properly.'
- ),
- 'Handler_read_rnd_next' => __(
- 'The number of requests to read the next row in the data file.'
- . ' This is high if you are doing a lot of table scans. Generally'
- . ' this suggests that your tables are not properly indexed or that'
- . ' your queries are not written to take advantage of the indexes'
- . ' you have.'
- ),
- 'Handler_rollback' => __(
- 'The number of internal ROLLBACK statements.'
- ),
- 'Handler_update' => __(
- 'The number of requests to update a row in a table.'
- ),
- 'Handler_write' => __(
- 'The number of requests to insert a row in a table.'
- ),
- 'Innodb_buffer_pool_pages_data' => __(
- 'The number of pages containing data (dirty or clean).'
- ),
- 'Innodb_buffer_pool_pages_dirty' => __(
- 'The number of pages currently dirty.'
- ),
- 'Innodb_buffer_pool_pages_flushed' => __(
- 'The number of buffer pool pages that have been requested'
- . ' to be flushed.'
- ),
- 'Innodb_buffer_pool_pages_free' => __(
- 'The number of free pages.'
- ),
- 'Innodb_buffer_pool_pages_latched' => __(
- 'The number of latched pages in InnoDB buffer pool. These are pages'
- . ' currently being read or written or that can\'t be flushed or'
- . ' removed for some other reason.'
- ),
- 'Innodb_buffer_pool_pages_misc' => __(
- 'The number of pages busy because they have been allocated for'
- . ' administrative overhead such as row locks or the adaptive'
- . ' hash index. This value can also be calculated as'
- . ' Innodb_buffer_pool_pages_total - Innodb_buffer_pool_pages_free'
- . ' - Innodb_buffer_pool_pages_data.'
- ),
- 'Innodb_buffer_pool_pages_total' => __(
- 'Total size of buffer pool, in pages.'
- ),
- 'Innodb_buffer_pool_read_ahead_rnd' => __(
- 'The number of "random" read-aheads InnoDB initiated. This happens'
- . ' when a query is to scan a large portion of a table but in'
- . ' random order.'
- ),
- 'Innodb_buffer_pool_read_ahead_seq' => __(
- 'The number of sequential read-aheads InnoDB initiated. This'
- . ' happens when InnoDB does a sequential full table scan.'
- ),
- 'Innodb_buffer_pool_read_requests' => __(
- 'The number of logical read requests InnoDB has done.'
- ),
- 'Innodb_buffer_pool_reads' => __(
- 'The number of logical reads that InnoDB could not satisfy'
- . ' from buffer pool and had to do a single-page read.'
- ),
- 'Innodb_buffer_pool_wait_free' => __(
- 'Normally, writes to the InnoDB buffer pool happen in the'
- . ' background. However, if it\'s necessary to read or create a page'
- . ' and no clean pages are available, it\'s necessary to wait for'
- . ' pages to be flushed first. This counter counts instances of'
- . ' these waits. If the buffer pool size was set properly, this'
- . ' value should be small.'
- ),
- 'Innodb_buffer_pool_write_requests' => __(
- 'The number writes done to the InnoDB buffer pool.'
- ),
- 'Innodb_data_fsyncs' => __(
- 'The number of fsync() operations so far.'
- ),
- 'Innodb_data_pending_fsyncs' => __(
- 'The current number of pending fsync() operations.'
- ),
- 'Innodb_data_pending_reads' => __(
- 'The current number of pending reads.'
- ),
- 'Innodb_data_pending_writes' => __(
- 'The current number of pending writes.'
- ),
- 'Innodb_data_read' => __(
- 'The amount of data read so far, in bytes.'
- ),
- 'Innodb_data_reads' => __(
- 'The total number of data reads.'
- ),
- 'Innodb_data_writes' => __(
- 'The total number of data writes.'
- ),
- 'Innodb_data_written' => __(
- 'The amount of data written so far, in bytes.'
- ),
- 'Innodb_dblwr_pages_written' => __(
- 'The number of pages that have been written for'
- . ' doublewrite operations.'
- ),
- 'Innodb_dblwr_writes' => __(
- 'The number of doublewrite operations that have been performed.'
- ),
- 'Innodb_log_waits' => __(
- 'The number of waits we had because log buffer was too small and'
- . ' we had to wait for it to be flushed before continuing.'
- ),
- 'Innodb_log_write_requests' => __(
- 'The number of log write requests.'
- ),
- 'Innodb_log_writes' => __(
- 'The number of physical writes to the log file.'
- ),
- 'Innodb_os_log_fsyncs' => __(
- 'The number of fsync() writes done to the log file.'
- ),
- 'Innodb_os_log_pending_fsyncs' => __(
- 'The number of pending log file fsyncs.'
- ),
- 'Innodb_os_log_pending_writes' => __(
- 'Pending log file writes.'
- ),
- 'Innodb_os_log_written' => __(
- 'The number of bytes written to the log file.'
- ),
- 'Innodb_pages_created' => __(
- 'The number of pages created.'
- ),
- 'Innodb_page_size' => __(
- 'The compiled-in InnoDB page size (default 16KB). Many values are'
- . ' counted in pages; the page size allows them to be easily'
- . ' converted to bytes.'
- ),
- 'Innodb_pages_read' => __(
- 'The number of pages read.'
- ),
- 'Innodb_pages_written' => __(
- 'The number of pages written.'
- ),
- 'Innodb_row_lock_current_waits' => __(
- 'The number of row locks currently being waited for.'
- ),
- 'Innodb_row_lock_time_avg' => __(
- 'The average time to acquire a row lock, in milliseconds.'
- ),
- 'Innodb_row_lock_time' => __(
- 'The total time spent in acquiring row locks, in milliseconds.'
- ),
- 'Innodb_row_lock_time_max' => __(
- 'The maximum time to acquire a row lock, in milliseconds.'
- ),
- 'Innodb_row_lock_waits' => __(
- 'The number of times a row lock had to be waited for.'
- ),
- 'Innodb_rows_deleted' => __(
- 'The number of rows deleted from InnoDB tables.'
- ),
- 'Innodb_rows_inserted' => __(
- 'The number of rows inserted in InnoDB tables.'
- ),
- 'Innodb_rows_read' => __(
- 'The number of rows read from InnoDB tables.'
- ),
- 'Innodb_rows_updated' => __(
- 'The number of rows updated in InnoDB tables.'
- ),
- 'Key_blocks_not_flushed' => __(
- 'The number of key blocks in the key cache that have changed but'
- . ' haven\'t yet been flushed to disk. It used to be known as'
- . ' Not_flushed_key_blocks.'
- ),
- 'Key_blocks_unused' => __(
- 'The number of unused blocks in the key cache. You can use this'
- . ' value to determine how much of the key cache is in use.'
- ),
- 'Key_blocks_used' => __(
- 'The number of used blocks in the key cache. This value is a'
- . ' high-water mark that indicates the maximum number of blocks'
- . ' that have ever been in use at one time.'
- ),
- 'Key_buffer_fraction_%' => __(
- 'Percentage of used key cache (calculated value)'
- ),
- 'Key_read_requests' => __(
- 'The number of requests to read a key block from the cache.'
- ),
- 'Key_reads' => __(
- 'The number of physical reads of a key block from disk. If Key_reads'
- . ' is big, then your key_buffer_size value is probably too small.'
- . ' The cache miss rate can be calculated as'
- . ' Key_reads/Key_read_requests.'
- ),
- 'Key_read_ratio_%' => __(
- 'Key cache miss calculated as rate of physical reads compared'
- . ' to read requests (calculated value)'
- ),
- 'Key_write_requests' => __(
- 'The number of requests to write a key block to the cache.'
- ),
- 'Key_writes' => __(
- 'The number of physical writes of a key block to disk.'
- ),
- 'Key_write_ratio_%' => __(
- 'Percentage of physical writes compared'
- . ' to write requests (calculated value)'
- ),
- 'Last_query_cost' => __(
- 'The total cost of the last compiled query as computed by the query'
- . ' optimizer. Useful for comparing the cost of different query'
- . ' plans for the same query. The default value of 0 means that'
- . ' no query has been compiled yet.'
- ),
- 'Max_used_connections' => __(
- 'The maximum number of connections that have been in use'
- . ' simultaneously since the server started.'
- ),
- 'Not_flushed_delayed_rows' => __(
- 'The number of rows waiting to be written in INSERT DELAYED queues.'
- ),
- 'Opened_tables' => __(
- 'The number of tables that have been opened. If opened tables is'
- . ' big, your table cache value is probably too small.'
- ),
- 'Open_files' => __(
- 'The number of files that are open.'
- ),
- 'Open_streams' => __(
- 'The number of streams that are open (used mainly for logging).'
- ),
- 'Open_tables' => __(
- 'The number of tables that are open.'
- ),
- 'Qcache_free_blocks' => __(
- 'The number of free memory blocks in query cache. High numbers can'
- . ' indicate fragmentation issues, which may be solved by issuing'
- . ' a FLUSH QUERY CACHE statement.'
- ),
- 'Qcache_free_memory' => __(
- 'The amount of free memory for query cache.'
- ),
- 'Qcache_hits' => __(
- 'The number of cache hits.'
- ),
- 'Qcache_inserts' => __(
- 'The number of queries added to the cache.'
- ),
- 'Qcache_lowmem_prunes' => __(
- 'The number of queries that have been removed from the cache to'
- . ' free up memory for caching new queries. This information can'
- . ' help you tune the query cache size. The query cache uses a'
- . ' least recently used (LRU) strategy to decide which queries'
- . ' to remove from the cache.'
- ),
- 'Qcache_not_cached' => __(
- 'The number of non-cached queries (not cachable, or not cached'
- . ' due to the query_cache_type setting).'
- ),
- 'Qcache_queries_in_cache' => __(
- 'The number of queries registered in the cache.'
- ),
- 'Qcache_total_blocks' => __(
- 'The total number of blocks in the query cache.'
- ),
- 'Rpl_status' => __(
- 'The status of failsafe replication (not yet implemented).'
- ),
- 'Select_full_join' => __(
- 'The number of joins that do not use indexes. If this value is'
- . ' not 0, you should carefully check the indexes of your tables.'
- ),
- 'Select_full_range_join' => __(
- 'The number of joins that used a range search on a reference table.'
- ),
- 'Select_range_check' => __(
- 'The number of joins without keys that check for key usage after'
- . ' each row. (If this is not 0, you should carefully check the'
- . ' indexes of your tables.)'
- ),
- 'Select_range' => __(
- 'The number of joins that used ranges on the first table. (It\'s'
- . ' normally not critical even if this is big.)'
- ),
- 'Select_scan' => __(
- 'The number of joins that did a full scan of the first table.'
- ),
- 'Slave_open_temp_tables' => __(
- 'The number of temporary tables currently'
- . ' open by the slave SQL thread.'
- ),
- 'Slave_retried_transactions' => __(
- 'Total (since startup) number of times the replication slave SQL'
- . ' thread has retried transactions.'
- ),
- 'Slave_running' => __(
- 'This is ON if this server is a slave that is connected to a master.'
- ),
- 'Slow_launch_threads' => __(
- 'The number of threads that have taken more than slow_launch_time'
- . ' seconds to create.'
- ),
- 'Slow_queries' => __(
- 'The number of queries that have taken more than long_query_time'
- . ' seconds.'
- ),
- 'Sort_merge_passes' => __(
- 'The number of merge passes the sort algorithm has had to do.'
- . ' If this value is large, you should consider increasing the'
- . ' value of the sort_buffer_size system variable.'
- ),
- 'Sort_range' => __(
- 'The number of sorts that were done with ranges.'
- ),
- 'Sort_rows' => __(
- 'The number of sorted rows.'
- ),
- 'Sort_scan' => __(
- 'The number of sorts that were done by scanning the table.'
- ),
- 'Table_locks_immediate' => __(
- 'The number of times that a table lock was acquired immediately.'
- ),
- 'Table_locks_waited' => __(
- 'The number of times that a table lock could not be acquired'
- . ' immediately and a wait was needed. If this is high, and you have'
- . ' performance problems, you should first optimize your queries,'
- . ' and then either split your table or tables or use replication.'
- ),
- 'Threads_cached' => __(
- 'The number of threads in the thread cache. The cache hit rate can'
- . ' be calculated as Threads_created/Connections. If this value is'
- . ' red you should raise your thread_cache_size.'
- ),
- 'Threads_connected' => __(
- 'The number of currently open connections.'
- ),
- 'Threads_created' => __(
- 'The number of threads created to handle connections. If'
- . ' Threads_created is big, you may want to increase the'
- . ' thread_cache_size value. (Normally this doesn\'t give a notable'
- . ' performance improvement if you have a good thread'
- . ' implementation.)'
- ),
- 'Threads_cache_hitrate_%' => __(
- 'Thread cache hit rate (calculated value)'
- ),
- 'Threads_running' => __(
- 'The number of threads that are not sleeping.'
- )
- );
-}
-
?>