diff options
| author | GitLab Bot <gitlab-bot@gitlab.com> | 2021-05-19 09:10:37 +0300 |
|---|---|---|
| committer | GitLab Bot <gitlab-bot@gitlab.com> | 2021-05-19 09:10:37 +0300 |
| commit | e173c316de15057b099a93053c9ef16180d6d1de (patch) | |
| tree | b0b7b4223b5450f4c77c6d6ce087f151e2415bb4 /doc/development/performance.md | |
| parent | 6eba378ec4193d168af62094caf8a69dd62ad5fd (diff) | |
Add latest changes from gitlab-org/gitlab@master
Diffstat (limited to 'doc/development/performance.md')
| -rw-r--r-- | doc/development/performance.md | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/doc/development/performance.md b/doc/development/performance.md index f81e6417f0e..c6fe9f29b53 100644 --- a/doc/development/performance.md +++ b/doc/development/performance.md @@ -365,14 +365,16 @@ This patch is available by default for [GCK](https://gitlab.com/gitlab-org/gitlab-compose-kit/-/merge_requests/149) and can additionally be enabled for [GDK](https://gitlab.com/gitlab-org/gitlab-development-kit/-/blob/main/doc/advanced.md#apply-custom-patches-for-ruby). -This patch provides a set of 3 metrics that makes it easier to understand efficiency of memory usage for a given codepath: +This patch provides the following metrics that make it easier to understand efficiency of memory use for a given codepath: +- `mem_total_bytes`: the number of bytes consumed both due to new objects being allocated into existing object slots + plus additional memory allocated for large objects (that is, `mem_bytes + slot_size * mem_objects`). +- `mem_bytes`: the number of bytes allocated by `malloc` for objects that did not fit into an existing object slot. - `mem_objects`: the number of objects allocated. -- `mem_bytes`: the number of bytes allocated by malloc. -- `mem_mallocs`: the number of malloc allocations. +- `mem_mallocs`: the number of `malloc` calls. The number of objects and bytes allocated impact how often GC cycles happen. -Fewer objects allocations result in a significantly more responsive application. +Fewer object allocations result in a significantly more responsive application. It is advised that web server requests do not allocate more than `100k mem_objects` and `100M mem_bytes`. You can view the current usage on [GitLab.com](https://log.gprd.gitlab.net/goto/3a9678bb595e3f89a0c7b5c61bcc47b9). |