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From "Karl Wettin (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1265) Identify bottleneck associated with not pooling searchers
Date Sat, 19 Apr 2008 00:06:23 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12590650#action_12590650
] 

Karl Wettin commented on LUCENE-1265:
-------------------------------------

Otis says:

bq. Not sure if this email got answered.  That's most likely due to the synchronized isDeleted
call:
bq. ./org/apache/lucene/index/SegmentReader.java:  public synchronized boolean isDeleted(int
n) {


> Identify bottleneck associated with not pooling searchers
> ---------------------------------------------------------
>
>                 Key: LUCENE-1265
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1265
>             Project: Lucene - Java
>          Issue Type: Task
>          Components: Search
>            Reporter: Karl Wettin
>
> There have been multiple reports suggesting synchronization problems due to great search
performace boost while pooling searchers under heavy load.
> I think this should be confirmed. Then identified and fixed,  alternatively add such
a pool to the code base. 
> http://www.nabble.com/Multiple-searchers-%28Was%3A-CachingWrapperFilter%3A-why-cache-per-IndexReader-%29-td14916124.html#a14997611
> http://www.nabble.com/Solid-State-Drives-vs.-RAMDirectory-td16025864.html
> http://wiki.apache.org/lucene-java/ImproveSearchingSpeed
> Use one instance of  IndexSearcher.
> Share a single  IndexSearcher across queries and across threads in your application.

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