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From wojtekpia <wojte...@hotmail.com>
Subject Re: Performance degradation caused by choice of range fields
Date Wed, 11 Feb 2009 17:03:09 GMT

Yes, I commit roughly every 15 minutes (via a data update). This update is
consistent between my tests, and only causes a performance drop when I'm
sorting on fields with many unique values. I've examined my GC logs, and
they are also consistent between my tests.



Otis Gospodnetic wrote:
> 
> Hi,
> 
> Did you commit (reopen the searcher) during the performance degradation
> period and did any of your queries use sort?  If so, perhaps your JVM is
> accumulating those thrown-away FieldCache objects and then GC has more and
> more garbage to clean up, causing pauses and lowering your overall
> throughput.
> 
> Otis
> --
> Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch
> 

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