Elasticsearch 5.3.2 seems to have caused a visible perf regression on query percentiles:
- fulltext: +20ms
- morelike: +40ms
- compsuggest: +2ms
Young GC activity seems to have jumped as well while the amount of heap used seems to have decreased:
Elasticsearch 5.3.2 seems to have caused a visible perf regression on query percentiles:
Young GC activity seems to have jumped as well while the amount of heap used seems to have decreased:
operations/puppet : production | elasticsearch: remove UseConcMarkSweepGC |
Change 358383 had a related patch set uploaded (by Gehel; owner: Gehel):
[operations/puppet@production] elasticsearch: remove UseConcMarkSweepGC
Mentioned in SAL (#wikimedia-operations) [2017-06-13T14:22:28Z] <gehel> restarting elasticsearch on relforge to validate GC configuration - T167636
Mentioned in SAL (#wikimedia-operations) [2017-06-13T15:09:12Z] <gehel> applying new GC configuration on elastic1018 - T167636
elastic1018 is looking good, with significantly lower GC times than other nodes (see grafana). Next test is to roll out to the whole cluster...
Change 358383 merged by Gehel:
[operations/puppet@production] elasticsearch: remove UseConcMarkSweepGC
Change is merged. It will require a full cluster restart to be taken into account before we can actually close it. Cluster restart is planned to start on Monday June 19th.