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From Apache Wiki <wikidi...@apache.org>
Subject [Solr Wiki] Update of "SolrPerformanceProblems" by ShawnHeisey
Date Wed, 25 Mar 2015 17:01:54 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 ShawnHeisey:
https://wiki.apache.org/solr/SolrPerformanceProblems?action=diff&rev1=43&rev2=44

Comment:
Added more info to the note about optimizing.

  
  ==== Special note regarding the optimize operation ====
  
- Optimizing your index results in a large amount of disk I/O.  If you don't have enough OS
disk cache to effectively cache your index, an optimize operation can be *very* disruptive
to normal Solr operation.  If optimizes are something that will happen frequently, it may
be a requirement that you have enough RAM to cache 100 percent of your index contents.
+ Optimizing your index results in a large amount of disk I/O.  If you don't have enough OS
disk cache to effectively cache your index, an optimize operation can be *very* disruptive
to normal Solr operation.  If optimizes are something that will happen frequently, it may
be a requirement that you have enough RAM to cache at least 100 percent of your index contents.
 Performance during an optimize will be best if you have enough RAM to cache both the original
and the optimized versions of the index at the same time.
  
  === Java Heap ===
  

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