[jboss-jira] [JBoss JIRA] Updated: (JBCLUSTER-131) Evaluate impact of message bundling in HttpSession replication performance

[Brian Stansberry (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBCLUSTER-131?page=all ]

Brian Stansberry updated JBCLUSTER-131:
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    Attachment: bundleeffect.xls

Updated bundleeffect.xls with results using different granularities (and thus different numbers of requests per second.) UDP transport. See GRANULARITY - UDP worksheet for details.  Results were consistent with the previous results.

With REPL_SYNC, disabling bundling seems helpful with lower numbers of requests per second; once req/s get high bundling actually improves performance.

With REPL_ASYNC, the effect of disabling bundling is inconsistent, but generally somewhat negative.

> Evaluate impact of message bundling in HttpSession replication performance
> --------------------------------------------------------------------------
>
>                 Key: JBCLUSTER-131
>                 URL: http://jira.jboss.com/jira/browse/JBCLUSTER-131
>             Project: JBoss Clustering
>          Issue Type: Task
>      Security Level: Public(Everyone can see) 
>            Reporter: Brian Stansberry
>         Assigned To: Brian Stansberry
>             Fix For: Q3Y6
>
>         Attachments: bundleeffect.xls, bundleeffect.xls, tc5-cluster-service.xml.nio, tc5-cluster-service.xml.tcp, tc5-cluster-service.xml.udp
>
>
> As described in http://wiki.jboss.org/wiki/Wiki.jsp?page=ProblemAndClusterRPCs the use of message bundling is not optimal for RPC calls.  Essentially all clustering traffic in the AS is RPC calls, so we should evaluate the impact of disabling message bundling.
> I'm going to evaluate this using both REPL_SYNC and REPL_ASYNC.  Any negative effect of bundling with REPL_ASYNC should be less, as the caller does not wait for the response.

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