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https://issues.apache.org/jira/browse/SOLR-16531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17631289#comment-17631289
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David Smiley commented on SOLR-16531:
-------------------------------------
bq. 750 cores per node; holy cow!
Hee hee hee :-D. for FullStory & Salesforce, yeah, this is the world we live
in. The numbers on some servers are orders of magnitude more; it's mind
boggling. Decisions like the use of a TreeMap to put some cores in merely for
convenience of sorting become unwise (hence fixed/contributed) -- an example.
Likewise I appreciate recent improvements from Noble to speedup solrconfig.xml
processing. It matters. Likewise I care about the overhead/weight of a
SolrCore... where are we being wasteful (e.g. unused metrics for handlers not
used).
> Performance degradation due to introduction of JAX-RS
> -----------------------------------------------------
>
> Key: SOLR-16531
> URL: https://issues.apache.org/jira/browse/SOLR-16531
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Ishan Chattopadhyaya
> Priority: Blocker
> Fix For: 9.2
>
> Attachments: Screenshot from 2022-11-09 11-20-44.png,
> results-with-patch.tar.gz
>
>
> During performance benchmarking on branch_9x, I observed a slowdown in
> restart performance since commits in SOLR-16347. See attached screenshot.
> CC [~gerlowskija].
> http://mostly.cool/cluster-test-with-patch.html
> The benchmark is here:
> https://github.com/fullstorydev/solr-bench/blob/ishan/repeatable-jenkins/suites/cluster-test.json.
> This suite was run after retro-actively applying the parallelStream patch
> from SOLR-16414:
> https://github.com/apache/solr/commit/b33161d0cdd976fc0c3dc78c4afafceb4db671cf.diff
>
> Effort to automate these benchmarks is WIP and tracked here: SOLR-16525.
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