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List:       activemq-dev
Subject:    [jira] [Closed] (AMQ-3242) Change prefetch size limit for topics
From:       "Robert Liguori (JIRA)" <jira () apache ! org>
Date:       2011-08-31 17:05:10
Message-ID: 1237069685.3386.1314810310266.JavaMail.tomcat () hel ! zones ! apache ! org
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     [ https://issues.apache.org/jira/browse/AMQ-3242?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel \
]

Robert Liguori closed AMQ-3242.
-------------------------------

    Resolution: Won't Fix

Changing 32766 to 32767 is too trivial to waste anyone's time on.  I'm closing this \
issue.

> Change prefetch size limit for topics from 32766 to 32767
> ---------------------------------------------------------
> 
> Key: AMQ-3242
> URL: https://issues.apache.org/jira/browse/AMQ-3242
> Project: ActiveMQ
> Issue Type: Improvement
> Reporter: Robert Liguori
> Priority: Trivial
> 
> The default prefetch size limit for topics is noted as 32766; \
> http://activemq.apache.org/performance-tuning.html The FUSE source documentation \
> (http://fusesource.com/docs/broker/5.4/tuning/index.html) states, "Default prefetch \
> limit is 32766. The default limit of 32766 is the largest value of a short and is \
> the maximum possible value of the prefetch limit.". The largest value for a short \
> actually is 32767 (http://java.sun.com/docs/books/jls/second_edition/html/typesValues.doc.html).
>  This is really a trivial issue, but should the default prefetch limit for topics \
> be changed from 32766 to 32767 to reflect the actual ceiling? And of course, I \
> would recommend changing the automatic setting to 32767, when the maximum has been \
> exceeded.  The following warning shows the applied default of 32766: 16:22:40 WARN  \
> maximum prefetch limit has been reset from 50000 to 32766

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