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From Apache Wiki <wikidi...@apache.org>
Subject [Solr Wiki] Trivial Update of "SolrPerformanceProblems" by YonikSeeley
Date Sat, 26 Apr 2014 15:26:22 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Solr Wiki" for change notification.

The "SolrPerformanceProblems" page has been changed by YonikSeeley:
https://wiki.apache.org/solr/SolrPerformanceProblems?action=diff&rev1=30&rev2=31

Comment:
point to off-heap data structures to reduce java heap reqs

   * Reduce RAMBufferSizeMB.  The default in recent Solr versions is 100.
    * This value can be particularly important if you have a lot of cores, because a buffer
will be used for each core.
   * Don't use RAMDirectoryFactory - instead, use the default and install enough system RAM
so the OS can cache your entire index as [[SolrPerformanceProblems#OS_Disk_Cache|discussed
above]].
+  * Try [[http://heliosearch.org|Heliosearch]], a Solr fork that features [[http://heliosearch.org/off-heap-filters/|Off-Heap
Filters]] and an [[http://heliosearch.org/solr-off-heap-fieldcache/|Off-Heap FieldCache]]
  
  ==== GC pause problems ====
  

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