[mod_cluster-issues] [JBoss JIRA] (MODCLUSTER-387) "Elected" and "Connected" values are incorrect with higher load
Michal Babacek (JIRA)
issues at jboss.org
Thu Feb 20 06:13:47 EST 2014
[ https://issues.jboss.org/browse/MODCLUSTER-387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12946312#comment-12946312 ]
Michal Babacek commented on MODCLUSTER-387:
-------------------------------------------
Hey guys, this is a small heads-up from today's run on {{mod_cluster 1.3.1, HEAD:88040c37}}:
|Balancer: qacluster|...|Status: OK|Elected: 74381|Read: 74387|Transferred: 0|Connected: -5|Load: 80|
|Balancer: qacluster|...|Status: OK|Elected: 97760|Read: 97769|Transferred: 0|Connected: -2|Load: 88|
|Balancer: qacluster|...|Status: OK|Elected: 107515|Read: 107390|Transferred: 0|Connected: 134|Load: 86|
|Balancer: qacluster|...|Status: OK|Elected: 114849|Read: 114861|Transferred: 0|Connected: -1|Load: 84|
|Balancer: qacluster|...|Status: OK|Elected: 123209|Read: 123223|Transferred: 0|Connected: -3|Load: 83|
|Balancer: qacluster|...|Status: OK|Elected: 125955|Read: 125533|Transferred: 0|Connected: 433|Load: 76|
|Balancer: qacluster|...|Status: NOTOK|Elected: 126348|Read: 126308|Transferred: 0|Connected: -3|Load: 76|
|Balancer: qacluster|...|Status: OK|Elected: 128497|Read: 128457|Transferred: 0|Connected: -3|Load: 69|
|Balancer: qacluster|...|Status: OK|Elected: 129876|Read: 129836|Transferred: 0|Connected: -4|Load: 64|
|Balancer: qacluster|...|Status: OK|Elected: 132074|Read: 132032|Transferred: 0|Connected: -1|Load: 64|
|Balancer: qacluster|...|Status: OK|Elected: 133995|Read: 133638|Transferred: 0|Connected: 314|Load: 62|
|Balancer: qacluster|...|Status: OK|Elected: 135183|Read: 133638|Transferred: 0|Connected: 1502|Load: 62|
|Balancer: qacluster|...|Status: OK|Elected: 135279|Read: 133638|Transferred: 0|Connected: 1598|Load: 62|
|Balancer: qacluster|...|Status: OK|Elected: 135408|Read: 133638|Transferred: 0|Connected: 1727|Load: 62|
|Balancer: qacluster|...|Status: NOTOK|Elected: 135508|Read: 134122|Transferred: 0|Connected: 45|Load: 62|
|Balancer: qacluster|...|Status: NOTOK|Elected: 135508|Read: 134170|Transferred: 0|Connected: -3|Load: 62|
|Balancer: qacluster|...|Status: OK|Elected: 137340|Read: 135992|Transferred: 0|Connected: 6|Load: 62|
|Balancer: qacluster|...|Status: OK|Elected: 138007|Read: 136669|Transferred: 0|Connected: -4|Load: 66|
|Balancer: qacluster|...|Status: OK|Elected: 138272|Read: 136933|Transferred: 0|Connected: -3|Load: 66|
|Balancer: qacluster|...|Status: OK|Elected: 138842|Read: 137406|Transferred: 0|Connected: 94|Load: 69|
|Balancer: qacluster|...|Status: OK|Elected: 141443|Read: 140105|Transferred: 0|Connected: -4|Load: 69|
|Balancer: qacluster|...|Status: OK|Elected: 142987|Read: 141641|Transferred: 0|Connected: 4|Load: 71|
|Balancer: qacluster|...|Status: OK|Elected: 145194|Read: 143793|Transferred: 0|Connected: 59|Load: 71|
|Balancer: qacluster|...|Status: OK|Elected: 146071|Read: 144733|Transferred: 0|Connected: -4|Load: 73|
|Balancer: qacluster|...|Status: OK|Elected: 146071|Read: 144733|Transferred: 0|Connected: -4|Load: 73|
|Balancer: qacluster|...|Status: OK|Elected: 146181|Read: 144843|Transferred: 0|Connected: -4|Load: 74|
|Balancer: qacluster|...|Status: OK|Elected: 146622|Read: 144972|Transferred: 0|Connected: 308|Load: 74|
|Balancer: qacluster|...|Status: OK|Elected: 147216|Read: 144972|Transferred: 0|Connected: 902|Load: 74|
|Balancer: qacluster|...|Status: OK|Elected: 148205|Read: 144972|Transferred: 0|Connected: 1891|Load: 74|
|Balancer: qacluster|...|Status: NOTOK|Elected: 148205|Read: 144972|Transferred: 0|Connected: 1409|Load: 74|
|Balancer: qacluster|...|Status: NOTOK|Elected: 148205|Read: 144972|Transferred: 0|Connected: 486|Load: 74|
|Balancer: qacluster|...|Status: NOTOK|Elected: 148306|Read: 144972|Transferred: 0|Connected: 113|Load: 74|
|Balancer: qacluster|...|Status: NOTOK|Elected: 150405|Read: 145874|Transferred: 0|Connected: 1308|Load: 70|
|Balancer: qacluster|...|Status: NOTOK|Elected: 150405|Read: 147096|Transferred: 0|Connected: 83|Load: 70|
|Balancer: qacluster|...|Status: OK|Elected: 151025|Read: 147622|Transferred: 0|Connected: 177|Load: 70|
|Balancer: qacluster|...|Status: OK|Elected: 152212|Read: 148990|Transferred: 0|Connected: -4|Load: 1|
|Balancer: qacluster|...|Status: OK|Elected: 152230|Read: 149008|Transferred: 0|Connected: -4|Load: 1|
|Balancer: qacluster|...|Status: OK|Elected: 152235|Read: 149013|Transferred: 0|Connected: -4|Load: 1|
|Balancer: qacluster|...|Status: OK|Elected: 152255|Read: 149033|Transferred: 0|Connected: -4|Load: 1|
|Balancer: qacluster|...|Status: OK|Elected: 152285|Read: 149063|Transferred: 0|Connected: -4|Load: 1|
|Balancer: qacluster|...|Status: OK|Elected: 152317|Read: 149094|Transferred: 0|Connected: -3|Load: 1|
|Balancer: qacluster|...|Status: OK|Elected: 152317|Read: 149094|Transferred: 0|Connected: -3|Load: 1|
The aforementioned is a series of "screen shots", several seconds apart, towards the end of the test, from mod_cluster manager console of a one of five present workers. It is noteworthy that all other workers presented similar erratic crazy numbers. The test was a benchmark, follow-up on [MODCLUSTER-372]/[MODCLUSTER-388], so the balancer was under a considerable load.
Furthermore, one might note several {{Status: NOTOK}} messages, I'm however unable to provide any further details, because the logging was completely shut off during the perf test. In my opinion, the system might have been chocking on requests, unable to receive STATUS message in time....dunno...
> "Elected" and "Connected" values are incorrect with higher load
> ---------------------------------------------------------------
>
> Key: MODCLUSTER-387
> URL: https://issues.jboss.org/browse/MODCLUSTER-387
> Project: mod_cluster
> Issue Type: Feature Request
> Affects Versions: 1.3.0.Alpha1
> Reporter: Radoslav Husar
> Assignee: Jean-Frederic Clere
> Priority: Minor
> Fix For: 1.3.1.Final
>
>
> See comment https://issues.jboss.org/browse/MODCLUSTER-383?focusedCommentId=12941306&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-12941306
> Marking as minor as I am not aware of some significant consequence this would cause.
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