[jboss-jira] [JBoss JIRA] Commented: (JGRP-827) Performance regression

[Bela Ban (JIRA)]

    [ https://jira.jboss.org/jira/browse/JGRP-827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12431398#action_12431398 ] 

Bela Ban commented on JGRP-827:
-------------------------------

The 2 files which cause the regression are UDP and TP. With the following versions, performance is great (78'108 msgs/sec !):

- UDP.java,v 1.183 2008/09/05 14:59:03 vlada Exp (latest: 1.185)
- TP.java,v 1.228 2008/09/25 13:15:06 belaban Exp (latest: 1.229)

Later versions show the regression. 

Looking into what happend between UDP 1.183 and 1.185 and TP 1.228 and 1.229

> Performance regression
> ----------------------
>
>                 Key: JGRP-827
>                 URL: https://jira.jboss.org/jira/browse/JGRP-827
>             Project: JGroups
>          Issue Type: Bug
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>            Priority: Critical
>             Fix For: 2.7
>
>         Attachments: JGroups.fast.zip
>
>
> There is a perf regression in 2.7: start 2 senders (perf.Test), send 1M 1K messages. With 2.6, we get ca 68'000 msgs/sec, with JGroups.fast (snapshot ca 2 weeks ago), we get 74'000 and with CVS head we get 65'000 msgs/sec.
> Attached is JGroups.fast.zip 

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