[prev in list] [next in list] [prev in thread] [next in thread] 

List:       solr-user
Subject:    Re: Measuring SOLR performance
From:       William Bell <billnbell () gmail ! com>
Date:       2013-07-31 6:24:47
Message-ID: CAJ59WMiC_RS=Gw=RjTC-+SGEj9K-PD7y2wiLbpbqYsicgnbH3Q () mail ! gmail ! com
[Download RAW message or body]


But that link does not tell me which on you are using?

You are listing like 4 versions on your site.

Also, what did it fix? Pause times?


Any other words of wisdom ?



On Tue, Jul 30, 2013 at 9:01 PM, Shawn Heisey <solr@elyograg.org> wrote:

> On 7/30/2013 6:59 PM, Roman Chyla wrote:
> > I have been wanting some tools for measuring performance of SOLR, similar
> > to Mike McCandles' lucene benchmark.
> >
> > so yet another monitor was born, is described here:
> > http://29min.wordpress.com/2013/07/31/measuring-solr-query-performance/
> >
> > I tested it on the problem of garbage collectors (see the blogs for
> > details) and so far I can't conclude whether highly customized G1 is
> better
> > than highly customized CMS, but I think interesting details can be seen
> > there.
> >
> > Hope this helps someone, and of course, feel free to improve the tool and
> > share!
>
> I have a CMS config that's even more tuned than before, and it has made
> things MUCH better.  This new config is inspired by more info that I got
> on IRC:
>
> http://wiki.apache.org/solr/ShawnHeisey#GC_Tuning
>
> The G1 customizations in your blog post don't look like they are really
> G1-specific - they may be useful with CMS as well.  This statement also
> applies to some of the CMS parameters, so I would use those with G1 as
> well for any testing.
>
> UseNUMA looks interesting for machines that actually are NUMA.  All the
> information that I can find says it is only for the throughput
> (parallel) collector, so it's probably not doing anything for G1.
>
> The pause parameters you've got for G1 are targets only.  It will *try*
> to stick within those parameters, but if a collection requires more than
> 50 milliseconds or has to happen more often than once a second, the
> collector will ignore what you have told it.
>
> Thanks,
> Shawn
>
>


-- 
Bill Bell
billnbell@gmail.com
cell 720-256-8076


[prev in list] [next in list] [prev in thread] [next in thread]