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https://issues.apache.org/jira/browse/SOLR-4509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13588787#comment-13588787
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Ryan Zezeski commented on SOLR-4509:
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> ...i'll be testing this in the next few days.
Great, I would love to see these results reproduced by someone else.
> I'm not very sure enabling TCP_NODELAY (e.g. disable Nagle's algorithm) will
> help a lot
I agree, it probably doesn't matter but I disabled it anyways given that nagle
is really meant for things like telnet and such. I figured it couldn't hurt to
disable.
> Disable Stale Check - Distributed Search (Performance)
> ------------------------------------------------------
>
> Key: SOLR-4509
> URL: https://issues.apache.org/jira/browse/SOLR-4509
> Project: Solr
> Issue Type: Improvement
> Components: search
> Environment: 5 node SmartOS cluster (all nodes living in same global
> zone - i.e. same physical machine)
> Reporter: Ryan Zezeski
> Priority: Minor
> Attachments: SOLR-4509.patch
>
>
> By disabling the Apache HTTP Client stale check I've witnessed a 2-4x
> increase in throughput and reduction of over 100ms. This patch was made in
> the context of a project I'm leading, called Yokozuna, which relies on
> distributed search.
> Here's the patch on Yokozuna: https://github.com/rzezeski/yokozuna/pull/26
> Here's a write-up I did on my findings:
> http://www.zinascii.com/2013/solr-distributed-search-and-the-stale-check.html
> I'm happy to answer any questions or make changes to the patch to make it
> acceptable.
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