performance regression after upgrading elasticsearch to v5.3.2
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	Gehel
	Jun 12 2017, 2:47 PM

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Since upgrading to elasticsearch v5.3.2, we see some performance degradation (+20ms on fulltext and +40ms on morelike, +2ms on comp suggest). This reboot also activated some new JVM options, to align them on the standard elasticsearch configuration. More context can be found on this upstream ticket. The problem seems to be related to the activation of Concurrent Mark and Sweep GC.

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Mentioned In: T231517: Investigate and fix GC issues on cloudelastic machines

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Gehel created this task.Jun 12 2017, 2:47 PM

Restricted Application edited projects, added Discovery-ARCHIVED, Discovery-Search; removed Discovery-Search (Current work). · View Herald TranscriptJun 12 2017, 2:47 PM

Restricted Application added a subscriber: Aklapper. · View Herald Transcript

Removing UseConcMarkSweepGC seems to work on relforge1001. young gen size is back to something more reasonable.

Change 358383 had a related patch set uploaded (by Gehel; owner: Gehel):
[operations/puppet@production] elasticsearch: remove UseConcMarkSweepGC

https://gerrit.wikimedia.org/r/358383

gerritbot added a project: Patch-For-Review.Jun 12 2017, 2:56 PM

elukey mentioned this in T231517: Investigate and fix GC issues on cloudelastic machines.Apr 9 2020, 7:53 AM

Gehel edited projects, added Discovery-Search (Current work); removed Discovery-Search.Feb 11 2025, 3:30 PM

performance regression after upgrading elasticsearch to v5.3.2Closed, ResolvedPublicActions

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performance regression after upgrading elasticsearch to v5.3.2
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