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Subject: Re: Performance degradation after upgrading from 6.2.1 to 6.4.1
To: solr-user@lucene.apache.org
References: <CACEcJG49++p_UE-bjn=gURq6WmZRKfh3XxHvEcn8KgpkJWnjmA@mail.gmail.com>
From: Ere Maijala <ere.maijala@helsinki.fi>
Message-ID: <1c648d64-a810-45f0-5e36-001de410d136@helsinki.fi>
Date: Tue, 14 Feb 2017 13:13:32 +0200
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archived-at: Tue, 14 Feb 2017 11:13:39 -0000

It might be <https://issues.apache.org/jira/browse/SOLR-10130>.

--Ere

14.2.2017, 11.52, Henrik Brautaset Aronsen kirjoitti:
> We are seeing performance degradation on our SolrCloud instances after
> upgrading to 6.4.1.
>
>
> Here are a couple of graphs.  As you can see, 6.4.1 was introduced 2/10
> 1200:
>
>
> https://www.dropbox.com/s/qrc0wodain50azz/solr1.png?dl=0
>
> https://www.dropbox.com/s/sdk30imm8jlomz2/solr2.png?dl=0
>
>
> These are two very different usage scenarios:
>
>
> * Solr1 has constant updates and very volatile data (30 minutes TTL, 20
> shards with no replicas, across 8 servers).  Requests in the 99 percentile
> went from ~400ms to 1000-1500ms. (Hystrix cutoff at 1.5s)
>
>
> * Solr2 is a more traditional instance with long-lived data (updated once a
> day, 24 shards with 2 replicas, across 8 servers).  Requests in the 99
> percentile went from ~400ms to at least 1s. (Hystrix cutoff at 1s)
>
>
> I've been looking around, but cannot really find a reason for the
> performance degradation.  Does any of you have an idea?
>
>
> Cheers,
>
> Henrik
>

-- 
Ere Maijala
Kansalliskirjasto / The National Library of Finland