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From Gora Mohanty <>
Subject Re: Is there any strss test tool for testing Solr?
Date Thu, 26 Aug 2010 18:22:04 GMT
On Wed, 25 Aug 2010 19:58:36 -0700
Amit Nithian <> wrote:

> i recommend JMeter. We use that to do load testing on a search
> server.

JMeter is certainly good, but we have also found Apache bench
to also be of much use. Maybe it is just us, and what we are
familiar with, but Apache bench seemed easier to automate. Also,
much easier to get up and running with, at least IMHO.

> Be careful though.. as silly as this may sound.. do NOT just
> issue random queries because that won't exercise your caches...

Conversely, we are still trying to figure out how to make real-life
measurements, without having the Solr cache coming into the picture.
For querying on a known keyword, every hit after the first, with
Apache bench, is strongly affected by the Solr cache. We tried using
random strings, but at least with Apache bench, the query string is
fixed for each invocation of Apache bench. Have to investigate
whether one can do otherwise with JMeter plugins. Also, a query
that returns no result (as a random query string typically would)
seems to be significantly faster than a real query. So, I think that
in the long run, the best way is to build information about
*typical* queries that your users run; using the Solr logs, and
then use a set of such queries for benchmarking.


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