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From Siegfried Goeschl <>
Subject Re: Measuring QPS
Date Sat, 04 Apr 2015 08:54:23 GMT
Hi Dan,

I’m using JavaMelody for my SOLR production servers - gives you the relevant HTTP stats
(what’s happening now & historical data) plus JVM monitoring as additional benefit.
The servers are deployed on Tomcat so I’m of little help regarding Jetty - having said that

* you need two Jars (javamelody & robin)
* tinker with web.xml

Here are two of my presentations mentioning JavaMelody (plus some other stuff)


Siegfried Goeschl

> On 03 Apr 2015, at 17:53, Shawn Heisey <> wrote:
> On 4/3/2015 9:37 AM, Davis, Daniel (NIH/NLM) [C] wrote:
>> I wanted to gather QPS for our production Solr instances, but I was surprised that
the Admin UI did not contain this information.   We are running a mix of versions, but mostly
4.10 at this point.   We are not using SolrCloud at present; that's part of why I'm checking
- I want to validate the size of our existing setup and what sort of SolrCloud setup would
be needed to centralize several of them.
>> What is the best way to gather QPS information?
>> What is the best way to add information like this to the Admin UI, if I decide to
take that step?
> As of Solr 4.1 (three years ago), request rate information is available
> in the admin UI and via JMX.  In the admin UI, choose a core from the
> dropdown, click on Plugins/Stats, then QUERYHANDLER, and open the
> handler you wish to examine.  You have avgRequestsPerSecond, which is
> calculated for the entire runtime of the SolrCore, as well as
> 5minRateReqsPerSecond and 15minRateReqsPerSecond, which are far more
> useful pieces of information.
> Thanks,
> Shawn

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