Author: fhanik
Date: Tue Jul 21 16:20:11 2009
New Revision: 796362
URL: http://svn.apache.org/viewvc?rev=796362&view=rev
Log:
Document Linux performance/overhead of using multi lock mechanism
Modified:
tomcat/trunk/modules/jdbc-pool/doc/jdbc-pool.xml
Modified: tomcat/trunk/modules/jdbc-pool/doc/jdbc-pool.xml
URL:
http://svn.apache.org/viewvc/tomcat/trunk/modules/jdbc-pool/doc/jdbc-pool.xml?rev=796362&r1=796361&r2=796362&view=diff
==============================================================================
--- tomcat/trunk/modules/jdbc-pool/doc/jdbc-pool.xml (original)
+++ tomcat/trunk/modules/jdbc-pool/doc/jdbc-pool.xml Tue Jul 21 16:20:11 2009
@@ -354,7 +354,9 @@
<p>(boolean) Set to true if you wish that calls to getConnection should
be treated
fairly in a true FIFO fashion. This uses the
<code>org.apache.tomcat.jdbc.pool.FairBlockingQueue</code>
implementation for the list of the idle connections. The default
value is <code>false</code>.
- This flag is required when you want to use asynchronous connection
retrieval.
+ This flag is required when you want to use asynchronous connection
retrieval.<br/>
+ During performance tests, the fairQueue does very well on a multi
core Solaris system,
+ but performs terribly on a Linux Fedora 11 system. On Linux we
recommend setting this to false.
</p>
</attribute>
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