| commit | 257a57f9f6243c99469db562415fc4a9e58f31d9 | [log] [tgz] |
|---|---|---|
| author | Jacek Centkowski <geminica.programs@gmail.com> | Wed Sep 14 08:35:20 2022 +0200 |
| committer | Jacek Centkowski <geminica.programs@gmail.com> | Thu Nov 03 11:13:24 2022 +0100 |
| tree | fcfd87c220e07253fac0f1b3e6aad10b64f6536b | |
| parent | c8b39c2fe54129a1a624c083a64ce4b3c193d48e [diff] |
Introduce metric for caches that fall back to default config Cache chroniclemap relies heavily on configuration (especially on average key and values sizes) so that its performance can be optimal. What is more starting with `stable-3.4` there are 7 core caches that are missing their configuration in Defaults and use fall-back configuration. It is strongly adviced to auto-tune them (see 'tuning.md') and store dedicated configuration in 'gerrit.config'. Issuing a warning in such case is not a perfect solution as Gerrit core caches are initiated very early during the server start hence messages are not always visible in the log. For this reason the following metric was introduced: * 'cache/chroniclemap/caches_without_configuration' that could be used as an alarm source as it contains the total number of caches that miss the dedicated configuration in 'gerrit.config' and use defaults Notes: * adding cache configuration to `gerrit.config` is not considered as default configuration * additionally, the 'auto-adjust-caches' command was extended with 'adjust-caches-on-defaults' option (see the tuning.md for details) that it can be used to tune all caches that fall back to defaults Bug: Issue 15865 Change-Id: I8b0835c6d8a8ae96832371b79afd2a11f69f09b9
Non-blocking and super-fast on-disk cache libModule for Gerrit Code Review based on ChronicleMap on-disk implementation.
This libModule is built like a Gerrit in-tree plugin, using Bazelisk. See the build instructions for more details.
Install the chronicle-map module into the $GERRIT_SITE/lib directory.
Add the cache-chroniclemap module to $GERRIT_SITE/etc/gerrit.config as follows:
[gerrit] installModule = com.googlesource.gerrit.modules.cache.chroniclemap.ChronicleMapCacheModule
For further information and supported options, refer to config documentation.
You can check how to migrate from H2 to chronicle-map here.