November 2013 - mod_cluster-issues

[JBoss JIRA] (MODCLUSTER-374) "httpd version 2.4.6 doesn't match version 2.4.6" logging

by Marco Danti (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-374?page=com.atlassian.jira.pl... ] Marco Danti commented on MODCLUSTER-374: ---------------------------------------- Please check this thread: https://community.jboss.org/message/835722#835722 I signaled the problem and the solution, but it was ignored > "httpd version 2.4.6 doesn't match version 2.4.6" logging > --------------------------------------------------------- > > Key: MODCLUSTER-374 > URL: https://issues.jboss.org/browse/MODCLUSTER-374 > Project: mod_cluster > Issue Type: Bug > Affects Versions: 1.3.0.Alpha1 > Reporter: Radoslav Husar > Assignee: Jean-Frederic Clere > Priority: Minor > Fix For: 1.3.0.Alpha2 > > > {noformat} > [Mon Nov 18 14:03:11.797623 2013] [:warn] [pid 29424] httpd version 2.4.6 doesn't match version 2.4.6 used by mod_proxy_cluster.c > {noformat} > Seems like there is still problem with this logging. I have compiled against 2.4.6 all from F19 repo and get this message. What is wrong, magic number maybe? -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira

11 years, 1 month

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[JBoss JIRA] (MODCLUSTER-375) mod_cluster version is unresolved in "Initializing mod_cluster ${project.version}"

by Radoslav Husar (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-375?page=com.atlassian.jira.pl... ] Radoslav Husar updated MODCLUSTER-375: -------------------------------------- Status: Pull Request Sent (was: Open) Git Pull Request: https://github.com/modcluster/mod_cluster/pull/50, https://github.com/modcluster/mod_cluster/pull/51 > mod_cluster version is unresolved in "Initializing mod_cluster ${project.version}" > ---------------------------------------------------------------------------------- > > Key: MODCLUSTER-375 > URL: https://issues.jboss.org/browse/MODCLUSTER-375 > Project: mod_cluster > Issue Type: Bug > Affects Versions: 1.3.0.Alpha1, 1.2.6.Final > Reporter: Radoslav Husar > Assignee: Radoslav Husar > Priority: Minor > Fix For: 1.3.0.Alpha2 > > > {noformat}16:43:37,960 INFO [org.jboss.modcluster] (MSC service thread 1-8) MODCLUSTER000001: Initializing mod_cluster ${project.version} > {noformat} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira

11 years, 1 month

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[JBoss JIRA] (MODCLUSTER-375) mod_cluster version is unresolved in "Initializing mod_cluster ${project.version}"

by Radoslav Husar (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-375?page=com.atlassian.jira.pl... ] Radoslav Husar updated MODCLUSTER-375: -------------------------------------- Fix Version/s: 1.2.7.Final > mod_cluster version is unresolved in "Initializing mod_cluster ${project.version}" > ---------------------------------------------------------------------------------- > > Key: MODCLUSTER-375 > URL: https://issues.jboss.org/browse/MODCLUSTER-375 > Project: mod_cluster > Issue Type: Bug > Affects Versions: 1.3.0.Alpha1, 1.2.6.Final > Reporter: Radoslav Husar > Assignee: Radoslav Husar > Priority: Minor > Fix For: 1.2.7.Final, 1.3.0.Alpha2 > > > {noformat}16:43:37,960 INFO [org.jboss.modcluster] (MSC service thread 1-8) MODCLUSTER000001: Initializing mod_cluster ${project.version} > {noformat} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira

11 years, 1 month

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[JBoss JIRA] (MODCLUSTER-280) New node registering with mod_cluster makes server unresponsive

by Radoslav Husar (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-280?page=com.atlassian.jira.pl... ] Radoslav Husar closed MODCLUSTER-280. ------------------------------------- Assignee: Radoslav Husar (was: Michal Babacek) Fix Version/s: (was: 1.2.1.Final) Resolution: Cannot Reproduce Bug Not reproduced ever since... closing. > New node registering with mod_cluster makes server unresponsive > --------------------------------------------------------------- > > Key: MODCLUSTER-280 > URL: https://issues.jboss.org/browse/MODCLUSTER-280 > Project: mod_cluster > Issue Type: Bug > Affects Versions: 1.2.0.Beta4 > Environment: Fedora 15 > Reporter: Radoslav Husar > Assignee: Radoslav Husar > > Scenario as in MODCLUSTER-279 and another node is starting, upon registration server doesn't response for 15 seconds -- see time difference. > {noformat} > Requesting http://127.0.0.1/load-demo/record @ Sun Jan 29 14:37:50 IST 2012 > HTTP/1.1 200 OK > Requesting http://127.0.0.1/load-demo/record @ Sun Jan 29 14:37:50 IST 2012 > HTTP/1.1 200 OK > Requesting http://127.0.0.1/load-demo/record @ Sun Jan 29 14:38:05 IST 2012 > HTTP/1.1 200 OK > Requesting http://127.0.0.1/load-demo/record @ Sun Jan 29 14:38:05 IST 2012 > HTTP/1.1 200 OK > {noformat} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira

11 years, 1 month

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[JBoss JIRA] (MODCLUSTER-375) mod_cluster version is unresolved in "Initializing mod_cluster ${project.version}"

by Radoslav Husar (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-375?page=com.atlassian.jira.pl... ] Radoslav Husar moved WFLY-2529 to MODCLUSTER-375: ------------------------------------------------- Project: mod_cluster (was: WildFly) Key: MODCLUSTER-375 (was: WFLY-2529) Affects Version/s: 1.2.6.Final 1.3.0.Alpha1 (was: 8.0.0.Beta1) Component/s: (was: Clustering) Security: (was: Public) Fix Version/s: 1.3.0.Alpha2 (was: 8.0.0.CR1) > mod_cluster version is unresolved in "Initializing mod_cluster ${project.version}" > ---------------------------------------------------------------------------------- > > Key: MODCLUSTER-375 > URL: https://issues.jboss.org/browse/MODCLUSTER-375 > Project: mod_cluster > Issue Type: Bug > Affects Versions: 1.2.6.Final, 1.3.0.Alpha1 > Reporter: Radoslav Husar > Assignee: Radoslav Husar > Priority: Minor > Fix For: 1.3.0.Alpha2 > > > {noformat}16:43:37,960 INFO [org.jboss.modcluster] (MSC service thread 1-8) MODCLUSTER000001: Initializing mod_cluster ${project.version} > {noformat} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira

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[JBoss JIRA] (MODCLUSTER-279) mod_cluster returns 503s after STATUS

by Radoslav Husar (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-279?page=com.atlassian.jira.pl... ] Radoslav Husar closed MODCLUSTER-279. ------------------------------------- > mod_cluster returns 503s after STATUS > ------------------------------------- > > Key: MODCLUSTER-279 > URL: https://issues.jboss.org/browse/MODCLUSTER-279 > Project: mod_cluster > Issue Type: Bug > Affects Versions: 1.2.0.Beta4 > Environment: Fedora 15 > Reporter: Radoslav Husar > Assignee: Paul Ferraro > Fix For: 1.2.1.Beta1 > > Attachments: logs-with-error.rar > > > Simple use case -- client is going (no sessions) and no node is connected (so 404s). Then node starts up and 200 is expected, which happens > but after short time on each STATUS message server returns 503s. > {noformat} > 127.0.0.1 - - [29/Jan/2012:14:34:30 +0530] "HEAD /load-demo/record HTTP/1.1" 404 - > 127.0.0.1 - - [29/Jan/2012:14:34:30 +0530] "HEAD /load-demo/record HTTP/1.1" 404 - > 127.0.0.1 - - [29/Jan/2012:14:34:30 +0530] "HEAD /load-demo/record HTTP/1.1" 404 - > 127.0.0.1 - - [29/Jan/2012:14:34:30 +0530] "HEAD /load-demo/record HTTP/1.1" 404 - > 127.0.0.1 - - [29/Jan/2012:14:34:30 +0530] "HEAD /load-demo/record HTTP/1.1" 404 - > 127.0.0.1 - - [29/Jan/2012:14:34:30 +0530] "HEAD /load-demo/record HTTP/1.1" 404 - > 127.0.0.1 - - [29/Jan/2012:14:34:30 +0530] "HEAD /load-demo/record HTTP/1.1" 404 - > 127.0.0.1 - - [29/Jan/2012:14:34:30 +0530] "HEAD /load-demo/record HTTP/1.1" 404 - > 127.0.0.1 - - [29/Jan/2012:14:34:31 +0530] "INFO / HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:31 +0530] "CONFIG / HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:31 +0530] "ENABLE-APP / HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:31 +0530] "ENABLE-APP / HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:31 +0530] "STATUS / HTTP/1.1" 200 76 > 127.0.0.1 - - [29/Jan/2012:14:34:31 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:31 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:31 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:31 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:31 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:31 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:31 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:32 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:32 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:32 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:32 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:32 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:32 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:32 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:32 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:32 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:33 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:33 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:33 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:33 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:33 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:33 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:33 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:33 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:34 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:34 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:34 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:34 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:34 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:34 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:34 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:34 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:35 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:35 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:35 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:35 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:35 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:35 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:35 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:35 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:35 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:36 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:36 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:36 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:36 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:36 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:36 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:36 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:36 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:37 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:37 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:37 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:37 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:37 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:37 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:37 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:37 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:37 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:38 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:38 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:38 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:38 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:38 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:38 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:38 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:38 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:39 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:39 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:39 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:39 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:39 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:39 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:39 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:39 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:40 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:40 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:40 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:40 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:40 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:40 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:40 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:40 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:40 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:41 +0530] "STATUS / HTTP/1.1" 200 76 > 127.0.0.1 - - [29/Jan/2012:14:34:41 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:41 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:41 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:41 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:41 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:41 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:41 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:41 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:42 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:42 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:42 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:42 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:42 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:42 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:42 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:42 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:43 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:43 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:43 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:43 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:43 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:43 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:43 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:43 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:43 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:44 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:44 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:44 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:44 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:44 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:44 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:44 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:44 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:45 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:45 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:45 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:45 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:45 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:45 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:45 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:45 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:46 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:46 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:46 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:46 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:46 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:46 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:46 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:46 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:46 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:47 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:47 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:47 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:47 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:47 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:47 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:47 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:47 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:48 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:48 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:48 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:48 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:48 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:48 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:48 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:48 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:49 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:49 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:49 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:49 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:49 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:49 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:49 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:49 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:49 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:50 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:50 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:50 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:50 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:50 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:50 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:50 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:50 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:51 +0530] "STATUS / HTTP/1.1" 200 76 > 127.0.0.1 - - [29/Jan/2012:14:34:51 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:51 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:51 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:51 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:51 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:51 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:51 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:51 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:51 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:52 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:52 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:52 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:52 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:52 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:52 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:52 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:52 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:52 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:53 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:53 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:53 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:53 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:53 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:53 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:53 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:53 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:53 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:54 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:54 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:54 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:54 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:54 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:54 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:54 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:54 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:55 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:55 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:55 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:55 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:55 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:55 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:55 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:55 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:55 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:56 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:56 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:56 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:56 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:56 +0530] "HEAD /load-demo/record HTTP/1.1" 503 - > 127.0.0.1 - - [29/Jan/2012:14:34:56 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:56 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:56 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:56 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:57 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:57 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:57 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:57 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:57 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:57 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:34:57 +0530] "HEAD /load-demo/record HTTP/1.1" 200 - > 127.0.0.1 - - [29/Jan/2012:14:35:01 +0530] "STATUS / HTTP/1.1" 200 76 > {noformat} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira

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[JBoss JIRA] (MODCLUSTER-372) Number of registered contexts negatively affects mod_cluster performance

by Michal Babacek (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-372?page=com.atlassian.jira.pl... ] Michal Babacek commented on MODCLUSTER-372: ------------------------------------------- Jean-Frederic is experimenting with reading from local instead of shared mem, the preliminary results of my unified tests look very promising: ||test||balancer CPU usage peak|| |1.2.x branch, 4 workers, 61 contexts each|70%| |1.2.x branch, 4 workers, 1 context each|17%| |MODCLUSTER-372 branch, 4 workers, 61 contexts each|28%| |MODCLUSTER-372 branch, 4 workers, 1 context each|17%| > Number of registered contexts negatively affects mod_cluster performance > ------------------------------------------------------------------------ > > Key: MODCLUSTER-372 > URL: https://issues.jboss.org/browse/MODCLUSTER-372 > Project: mod_cluster > Issue Type: Bug > Affects Versions: 1.2.4.Final, 1.2.6.Final > Environment: RHEL6, other platforms are to be confirmed. > Reporter: Michal Babacek > Assignee: Michal Babacek > Labels: mod_cluster, performace > Fix For: 1.2.7.Final, 1.3.0.Alpha2 > > Attachments: 4-workers-1-context-balancer-cpu.png, 4-workers-61-context-accessing-1-balancer-cpu.png, 9-workers-1-context-balancer-cpu.png, 9-workers-31-context-accessing-1-balancer-cpu.png, 9-workers-31-context-round-robin-balancer-cpu.png, callgrind.zip, httpd.conf > > > There is a performance concern regarding CPU usage on the Apache HTTP Server with mod_cluster set up as a load balancer. Perf tests revealed that the major variable affecting the CPU usage is the overall number of registered contexts. It's noteworthy that these contexts actually don't need to be accessed at all, it's enough that they are present. > The first test [9 workers, 31 contexts, round robin|https://issues.jboss.org/browse/MODCLUSTER-372#9workers,31contexts,...] depicts a behavior where all contexts are being accessed in a round robin fashion. Note the CPU usage. If we compare it to the [9 workers, 1 context|https://issues.jboss.org/browse/MODCLUSTER-372#9workers,1context] test, it becomes apparent that there is something wrong with the CPU usage. As it is clear from the [9 workers, 31 contexts, access 1|https://issues.jboss.org/browse/MODCLUSTER-372#9workers,31contexts,acce...] test, accessing only one of these contexts doesn't help much. > The last two tests, [4 workers, 61 contexts, accessing 1|https://issues.jboss.org/browse/MODCLUSTER-372#4workers,61contexts,acce...] and [4 workers, 1 context|https://issues.jboss.org/browse/MODCLUSTER-372#4workers,1context] confirm the results, environment differs only in number of nodes and number of contexts. > [^httpd.conf] attached, stay tuned for some profiler outputs... > h3. 9 workers, 31 contexts, round robin > !9-workers-31-context-round-robin-balancer-cpu.png|thumbnail! > ||Nodes||Sessions||Ses.Active||Samples||samples/s||mean resp. ms||max resp. ms||conn. errors||valid samples||%|| > |9|150|150|8843|147.4|15|60|0|8843|100%| > |9|250|250|14422|240.3|37|215|0|14422|100%| > |9|350|350|17551|292.5|196|443|0|17551|100%| > |9|450|450|21303|355.0|269|603|0|21303|100%| > |9|550|550|24818|413.6|325|686|0|24818|100%| > |9|650|650|26804|446.7|469|800|0|26804|100%| > |9|750|750|29930|498.8|507|985|0|29930|100%| > |9|850|850|30665|511.0|665|1185|0|30665|100%| > |9|950|950|34421|573.6|647|1316|0|34421|100%| > |9|1050|1050|35067|584.4|800|1487|0|35067|100%| > |9|1150|1150|36024|600.4|925|1612|0|36024|100%| > |9|1250|1250|36635|610.5|1030|1815|0|36635|100%| > |9|1350|1350|38395|639.9|1096|1942|0|38395|100%| > |9|1450|1450|39713|661.8|1170|2466|0|39713|100%| > |9|1550|1550|39455|657.5|1392|2340|0|39455|100%| > |9|1650|1650|39849|664.1|1465|4240|0|39849|100%| > |9|1750|1750|42435|707.2|1454|6511|0|42435|100%| > |9|1850|1850|44714|745.2|1498|4866|0|44714|100%| > |9|1950|1911|46072|767.8|1554|43016|0|46072|100%| > |9|2050|1911|44496|741.5|1617|4953|39|44457|99%| > |9|2150|1911|43715|728.5|1632|5348|125|43590|99%| > |9|2250|1911|41112|685.1|1764|9800|155|40957|99%| > h3. 9 workers, 31 contexts, accessing only one of them > !9-workers-31-context-accessing-1-balancer-cpu.png|thumbnail! > ||Nodes||Sessions||Ses.Active||Samples||samples/s||mean resp. ms||max resp. ms||conn. errors||valid samples||%|| > |9|150|150|8954|149.2|4|42|0|8954|100%| > |9|250|250|14897|248.3|7|33|0|14897|100%| > |9|350|350|20784|346.4|8|68|0|20784|100%| > |9|450|450|26748|445.8|8|69|0|26748|100%| > |9|550|550|32553|542.5|11|92|0|32553|100%| > |9|650|650|38558|642.6|10|60|0|38558|100%| > |9|750|750|43571|726.1|29|329|0|43571|100%| > |9|850|850|46133|768.8|99|494|0|46133|100%| > |9|950|950|50854|847.5|120|501|0|50854|100%| > |9|1050|1050|54451|907.4|154|584|0|54451|100%| > |9|1150|1150|59961|999.3|138|674|0|59961|100%| > |9|1250|1250|62567|1,042.6|198|675|0|62567|100%| > |9|1350|1350|61939|1,032.2|301|799|0|61939|100%| > |9|1450|1450|67920|1,131.9|276|844|0|67920|100%| > |9|1550|1550|73151|1,219.1|261|861|0|73151|100%| > |9|1650|1650|73937|1,232.2|332|955|0|73937|100%| > |9|1750|1750|73516|1,225.2|423|1046|0|73516|100%| > |9|1850|1850|72556|1,209.1|515|1264|0|72556|100%| > |9|1950|1911|78613|1,310.1|454|50273|0|78613|100%| > |9|2050|1911|80141|1,335.6|431|1225|39|80102|99%| > |9|2150|1911|76979|1,282.9|490|1338|127|76852|99%| > |9|2250|1911|78048|1,300.7|464|1305|136|77912|99%| > h3. 9 workers, 1 context > !9-workers-1-context-balancer-cpu.png|thumbnail! > ||Nodes||Sessions||Ses.Active||Samples||samples/s||mean resp. ms||max resp. ms||conn. errors||valid samples||%|| > |9|150|150|8965|149.4|2|12|0|8965|100%| > |9|250|250|14965|249.4|2|22|0|14965|100%| > |9|350|350|20950|349.1|2|23|0|20950|100%| > |9|450|450|26941|449.0|2|26|0|26941|100%| > |9|550|550|32937|548.9|1|26|0|32937|100%| > |9|650|650|38900|648.3|1|19|0|38900|100%| > |9|750|750|44918|748.6|1|11|0|44918|100%| > |9|850|850|50902|848.3|2|22|0|50902|100%| > |9|950|950|56878|947.9|1|14|0|56878|100%| > |9|1050|1050|62874|1,047.8|2|12|0|62874|100%| > |9|1150|1150|68845|1,147.3|2|99|0|68845|100%| > |9|1250|1250|74851|1,247.4|2|103|0|74851|100%| > |9|1350|1350|80826|1,347.0|2|100|0|80826|100%| > |9|1450|1450|86806|1,446.7|2|19|0|86806|100%| > |9|1550|1550|92817|1,546.8|2|52|0|92817|100%| > |9|1650|1650|98774|1,646.1|2|18|0|98774|100%| > |9|1750|1750|104755|1,745.8|2|18|0|104755|100%| > |9|1850|1850|110734|1,845.4|2|20|0|110734|100%| > |9|1950|1910|113419|1,890.2|9|41855|0|113419|100%| > |9|2050|1911|114437|1,907.1|2|77962|39|114397|99%| > |9|2150|1911|114481|1,907.9|2|15|128|114353|99%| > |9|2250|1911|114545|1,908.9|2|24|144|114401|99%| > h3. 4 workers, 61 contexts, accessing only one of them > !4-workers-61-context-accessing-1-balancer-cpu.png|thumbnail! > ||Nodes||Sessions||Ses.Active||Samples||samples/s||mean resp. ms||max resp. ms||conn. errors||valid samples||%|| > |4|500|500|29796|496.6|6|52|0|29796|100%| > |4|650|650|38706|645.0|7|149|0|38706|100%| > |4|800|800|47585|793.0|8|129|0|47585|100%| > |4|950|950|54467|907.7|43|377|0|54467|100%| > |4|1100|1100|62500|1,041.6|54|396|0|62500|100%| > |4|1250|1250|69446|1,157.3|81|512|0|69446|100%| > |4|1400|1400|76217|1,270.2|97|517|0|76217|100%| > |4|1550|1550|80216|1,336.8|152|810|0|80216|100%| > |4|1700|1700|80797|1,346.5|271|864|0|80797|100%| > |4|1850|1850|94172|1,569.3|182|822|0|94172|100%| > |4|2000|1916|91014|1,516.8|253|48650|0|91014|100%| > |4|2150|1916|95852|1,597.4|205|848|83|95769|99%| > h3. 4 workers, 1 context > !4-workers-1-context-balancer-cpu.png|thumbnail! > ||Nodes||Sessions||Ses.Active||Samples||samples/s||mean resp. ms||max resp. ms||conn. errors||valid samples||%|| > |4|500|500|29922|498.7|2|39|0|29922|100%| > |4|650|650|38923|648.7|1|39|0|38923|100%| > |4|800|800|47916|798.5|1|17|0|47916|100%| > |4|950|950|56896|948.2|1|17|0|56896|100%| > |4|1100|1100|65889|1,098.1|1|115|0|65889|100%| > |4|1250|1250|74874|1,247.8|1|101|0|74874|100%| > |4|1400|1400|83818|1,396.8|1|17|0|83818|100%| > |4|1550|1550|92830|1,547.0|1|17|0|92830|100%| > |4|1700|1700|101805|1,696.6|1|11|0|101805|100%| > |4|1850|1850|110785|1,846.3|1|11|0|110785|100%| > |4|2000|1916|113747|1,895.6|10|53108|0|113747|100%| > |4|2150|1916|114825|1,913.6|1|24|83|114742|99%| -- This message is automatically generated by JIRA. 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[JBoss JIRA] (MODCLUSTER-374) "httpd version 2.4.6 doesn't match version 2.4.6" logging

by Radoslav Husar (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-374?page=com.atlassian.jira.pl... ] Radoslav Husar updated MODCLUSTER-374: -------------------------------------- Priority: Minor (was: Major) > "httpd version 2.4.6 doesn't match version 2.4.6" logging > --------------------------------------------------------- > > Key: MODCLUSTER-374 > URL: https://issues.jboss.org/browse/MODCLUSTER-374 > Project: mod_cluster > Issue Type: Bug > Affects Versions: 1.3.0.Alpha1 > Reporter: Radoslav Husar > Assignee: Jean-Frederic Clere > Priority: Minor > Fix For: 1.3.0.Alpha2 > > > {noformat} > [Mon Nov 18 14:03:11.797623 2013] [:warn] [pid 29424] httpd version 2.4.6 doesn't match version 2.4.6 used by mod_proxy_cluster.c > {noformat} > Seems like there is still problem with this logging. I have compiled against 2.4.6 all from F19 repo and get this message. What is wrong, magic number maybe? -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira

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[JBoss JIRA] (MODCLUSTER-374) "httpd version 2.4.6 doesn't match version 2.4.6" logging

by Radoslav Husar (JIRA)

Radoslav Husar created MODCLUSTER-374: ----------------------------------------- Summary: "httpd version 2.4.6 doesn't match version 2.4.6" logging Key: MODCLUSTER-374 URL: https://issues.jboss.org/browse/MODCLUSTER-374 Project: mod_cluster Issue Type: Bug Affects Versions: 1.3.0.Alpha1 Reporter: Radoslav Husar Assignee: Jean-Frederic Clere Fix For: 1.3.0.Alpha2 {noformat} [Mon Nov 18 14:03:11.797623 2013] [:warn] [pid 29424] httpd version 2.4.6 doesn't match version 2.4.6 used by mod_proxy_cluster.c {noformat} Seems like there is still problem with this logging. I have compiled against 2.4.6 all from F19 repo and get this message. What is wrong, magic number maybe? -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira

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[JBoss JIRA] (MODCLUSTER-372) Number of registered contexts negatively affects mod_cluster performance

by Michal Babacek (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-372?page=com.atlassian.jira.pl... ] Michal Babacek edited comment on MODCLUSTER-372 at 11/18/13 4:57 AM: --------------------------------------------------------------------- I've identified these bottle necks: Three the most expensive functions and their callers.They keep this order regardless of the event metric being Instruction fetch/Data read/Data write. # Function {{ap_slotmem_mem}} from mod_slotmem/sharedmem_util.c called by: * {{get_context}} from mod_manager/context.c * {{get_node}} from mod_manager/node.c * {{loc_read_node}} from mod_manager/mod_manager.c * {{find_node_context_host}} from mod_proxy_cluster/mod_proxy_cluster.c * {{loc_read_context}} mod_manager/context.c * {{read_context_table}} mod_proxy_cluster/mod_proxy_cluster.c * {{manager_info}} from mod_manager/mod_manager.c # Function {{ap_slotmem_do}} from mod_slotmem/sharedmem_util.c called mostly by * httpd_request and httpd_core functions from httpd sources. # Function {{find_node_context_host}} from mod_proxy_cluster/mod_proxy_cluster.c called by * httpd sources, mostly on request_process and request_connection. So, IMHO, {{find_node_context_host}} is indeed the trouble :) Attaching the profiling valgrind logs [^callgrind.zip], created as: {noformat} valgrind --tool=callgrind --dump-instr=yes --simulate-cache=yes --collect-jumps=yes --compress-strings=no --compress-pos=no --collect-systime=yes ./httpd -f /tmp/hudson/httpd/conf/httpd.conf -E /tmp/hudson/httpd/logs/httpd.log {noformat} with this debug setting: {code} <IfModule worker.c> ThreadLimit 50 StartServers 1 ServerLimit 1 MinSpareThreads 50 MaxSpareThreads 50 MaxClients 50 ThreadsPerChild 50 MaxRequestsPerChild 0 </IfModule> {code} and 4 worker nodes, 65 contexts each, and several dozens of concurrent client sessions. was (Author: mbabacek): I've identified these bottle necks: Three the most expensive functions and their callers: # Function {{ap_slotmem_mem}} from mod_slotmem/sharedmem_util.c called by: * {{get_context}} from mod_manager/context.c * {{get_node}} from mod_manager/node.c * {{loc_read_node}} from mod_manager/mod_manager.c * {{find_node_context_host}} from mod_proxy_cluster/mod_proxy_cluster.c * {{loc_read_context}} mod_manager/context.c * {{read_context_table}} mod_proxy_cluster/mod_proxy_cluster.c * {{manager_info}} from mod_manager/mod_manager.c # Function {{ap_slotmem_do}} from mod_slotmem/sharedmem_util.c called mostly by * httpd_request and httpd_core functions from httpd sources. # Function {{find_node_context_host}} from mod_proxy_cluster/mod_proxy_cluster.c called by * httpd sources, mostly on request_process and request_connection. So, IMHO, {{find_node_context_host}} is indeed the trouble :) Attaching the profiling valgrind logs [^callgrind.zip], created as: {noformat} valgrind --tool=callgrind --dump-instr=yes --simulate-cache=yes --collect-jumps=yes --compress-strings=no --compress-pos=no --collect-systime=yes ./httpd -f /tmp/hudson/httpd/conf/httpd.conf -E /tmp/hudson/httpd/logs/httpd.log {noformat} with this debug setting: {code} <IfModule worker.c> ThreadLimit 50 StartServers 1 ServerLimit 1 MinSpareThreads 50 MaxSpareThreads 50 MaxClients 50 ThreadsPerChild 50 MaxRequestsPerChild 0 </IfModule> {code} and 4 worker nodes, 65 contexts each, and several dozens of concurrent client sessions. > Number of registered contexts negatively affects mod_cluster performance > ------------------------------------------------------------------------ > > Key: MODCLUSTER-372 > URL: https://issues.jboss.org/browse/MODCLUSTER-372 > Project: mod_cluster > Issue Type: Bug > Affects Versions: 1.2.4.Final, 1.2.6.Final > Environment: RHEL6, other platforms are to be confirmed. > Reporter: Michal Babacek > Assignee: Michal Babacek > Labels: mod_cluster, performace > Fix For: 1.2.7.Final, 1.3.0.Alpha2 > > Attachments: 4-workers-1-context-balancer-cpu.png, 4-workers-61-context-accessing-1-balancer-cpu.png, 9-workers-1-context-balancer-cpu.png, 9-workers-31-context-accessing-1-balancer-cpu.png, 9-workers-31-context-round-robin-balancer-cpu.png, callgrind.zip, httpd.conf > > > There is a performance concern regarding CPU usage on the Apache HTTP Server with mod_cluster set up as a load balancer. Perf tests revealed that the major variable affecting the CPU usage is the overall number of registered contexts. It's noteworthy that these contexts actually don't need to be accessed at all, it's enough that they are present. > The first test [9 workers, 31 contexts, round robin|https://issues.jboss.org/browse/MODCLUSTER-372#9workers,31contexts,...] depicts a behavior where all contexts are being accessed in a round robin fashion. Note the CPU usage. If we compare it to the [9 workers, 1 context|https://issues.jboss.org/browse/MODCLUSTER-372#9workers,1context] test, it becomes apparent that there is something wrong with the CPU usage. As it is clear from the [9 workers, 31 contexts, access 1|https://issues.jboss.org/browse/MODCLUSTER-372#9workers,31contexts,acce...] test, accessing only one of these contexts doesn't help much. > The last two tests, [4 workers, 61 contexts, accessing 1|https://issues.jboss.org/browse/MODCLUSTER-372#4workers,61contexts,acce...] and [4 workers, 1 context|https://issues.jboss.org/browse/MODCLUSTER-372#4workers,1context] confirm the results, environment differs only in number of nodes and number of contexts. > [^httpd.conf] attached, stay tuned for some profiler outputs... > h3. 9 workers, 31 contexts, round robin > !9-workers-31-context-round-robin-balancer-cpu.png|thumbnail! > ||Nodes||Sessions||Ses.Active||Samples||samples/s||mean resp. ms||max resp. ms||conn. errors||valid samples||%|| > |9|150|150|8843|147.4|15|60|0|8843|100%| > |9|250|250|14422|240.3|37|215|0|14422|100%| > |9|350|350|17551|292.5|196|443|0|17551|100%| > |9|450|450|21303|355.0|269|603|0|21303|100%| > |9|550|550|24818|413.6|325|686|0|24818|100%| > |9|650|650|26804|446.7|469|800|0|26804|100%| > |9|750|750|29930|498.8|507|985|0|29930|100%| > |9|850|850|30665|511.0|665|1185|0|30665|100%| > |9|950|950|34421|573.6|647|1316|0|34421|100%| > |9|1050|1050|35067|584.4|800|1487|0|35067|100%| > |9|1150|1150|36024|600.4|925|1612|0|36024|100%| > |9|1250|1250|36635|610.5|1030|1815|0|36635|100%| > |9|1350|1350|38395|639.9|1096|1942|0|38395|100%| > |9|1450|1450|39713|661.8|1170|2466|0|39713|100%| > |9|1550|1550|39455|657.5|1392|2340|0|39455|100%| > |9|1650|1650|39849|664.1|1465|4240|0|39849|100%| > |9|1750|1750|42435|707.2|1454|6511|0|42435|100%| > |9|1850|1850|44714|745.2|1498|4866|0|44714|100%| > |9|1950|1911|46072|767.8|1554|43016|0|46072|100%| > |9|2050|1911|44496|741.5|1617|4953|39|44457|99%| > |9|2150|1911|43715|728.5|1632|5348|125|43590|99%| > |9|2250|1911|41112|685.1|1764|9800|155|40957|99%| > h3. 9 workers, 31 contexts, accessing only one of them > !9-workers-31-context-accessing-1-balancer-cpu.png|thumbnail! > ||Nodes||Sessions||Ses.Active||Samples||samples/s||mean resp. ms||max resp. ms||conn. errors||valid samples||%|| > |9|150|150|8954|149.2|4|42|0|8954|100%| > |9|250|250|14897|248.3|7|33|0|14897|100%| > |9|350|350|20784|346.4|8|68|0|20784|100%| > |9|450|450|26748|445.8|8|69|0|26748|100%| > |9|550|550|32553|542.5|11|92|0|32553|100%| > |9|650|650|38558|642.6|10|60|0|38558|100%| > |9|750|750|43571|726.1|29|329|0|43571|100%| > |9|850|850|46133|768.8|99|494|0|46133|100%| > |9|950|950|50854|847.5|120|501|0|50854|100%| > |9|1050|1050|54451|907.4|154|584|0|54451|100%| > |9|1150|1150|59961|999.3|138|674|0|59961|100%| > |9|1250|1250|62567|1,042.6|198|675|0|62567|100%| > |9|1350|1350|61939|1,032.2|301|799|0|61939|100%| > |9|1450|1450|67920|1,131.9|276|844|0|67920|100%| > |9|1550|1550|73151|1,219.1|261|861|0|73151|100%| > |9|1650|1650|73937|1,232.2|332|955|0|73937|100%| > |9|1750|1750|73516|1,225.2|423|1046|0|73516|100%| > |9|1850|1850|72556|1,209.1|515|1264|0|72556|100%| > |9|1950|1911|78613|1,310.1|454|50273|0|78613|100%| > |9|2050|1911|80141|1,335.6|431|1225|39|80102|99%| > |9|2150|1911|76979|1,282.9|490|1338|127|76852|99%| > |9|2250|1911|78048|1,300.7|464|1305|136|77912|99%| > h3. 9 workers, 1 context > !9-workers-1-context-balancer-cpu.png|thumbnail! > ||Nodes||Sessions||Ses.Active||Samples||samples/s||mean resp. ms||max resp. ms||conn. errors||valid samples||%|| > |9|150|150|8965|149.4|2|12|0|8965|100%| > |9|250|250|14965|249.4|2|22|0|14965|100%| > |9|350|350|20950|349.1|2|23|0|20950|100%| > |9|450|450|26941|449.0|2|26|0|26941|100%| > |9|550|550|32937|548.9|1|26|0|32937|100%| > |9|650|650|38900|648.3|1|19|0|38900|100%| > |9|750|750|44918|748.6|1|11|0|44918|100%| > |9|850|850|50902|848.3|2|22|0|50902|100%| > |9|950|950|56878|947.9|1|14|0|56878|100%| > |9|1050|1050|62874|1,047.8|2|12|0|62874|100%| > |9|1150|1150|68845|1,147.3|2|99|0|68845|100%| > |9|1250|1250|74851|1,247.4|2|103|0|74851|100%| > |9|1350|1350|80826|1,347.0|2|100|0|80826|100%| > |9|1450|1450|86806|1,446.7|2|19|0|86806|100%| > |9|1550|1550|92817|1,546.8|2|52|0|92817|100%| > |9|1650|1650|98774|1,646.1|2|18|0|98774|100%| > |9|1750|1750|104755|1,745.8|2|18|0|104755|100%| > |9|1850|1850|110734|1,845.4|2|20|0|110734|100%| > |9|1950|1910|113419|1,890.2|9|41855|0|113419|100%| > |9|2050|1911|114437|1,907.1|2|77962|39|114397|99%| > |9|2150|1911|114481|1,907.9|2|15|128|114353|99%| > |9|2250|1911|114545|1,908.9|2|24|144|114401|99%| > h3. 4 workers, 61 contexts, accessing only one of them > !4-workers-61-context-accessing-1-balancer-cpu.png|thumbnail! > ||Nodes||Sessions||Ses.Active||Samples||samples/s||mean resp. ms||max resp. ms||conn. errors||valid samples||%|| > |4|500|500|29796|496.6|6|52|0|29796|100%| > |4|650|650|38706|645.0|7|149|0|38706|100%| > |4|800|800|47585|793.0|8|129|0|47585|100%| > |4|950|950|54467|907.7|43|377|0|54467|100%| > |4|1100|1100|62500|1,041.6|54|396|0|62500|100%| > |4|1250|1250|69446|1,157.3|81|512|0|69446|100%| > |4|1400|1400|76217|1,270.2|97|517|0|76217|100%| > |4|1550|1550|80216|1,336.8|152|810|0|80216|100%| > |4|1700|1700|80797|1,346.5|271|864|0|80797|100%| > |4|1850|1850|94172|1,569.3|182|822|0|94172|100%| > |4|2000|1916|91014|1,516.8|253|48650|0|91014|100%| > |4|2150|1916|95852|1,597.4|205|848|83|95769|99%| > h3. 4 workers, 1 context > !4-workers-1-context-balancer-cpu.png|thumbnail! > ||Nodes||Sessions||Ses.Active||Samples||samples/s||mean resp. ms||max resp. ms||conn. errors||valid samples||%|| > |4|500|500|29922|498.7|2|39|0|29922|100%| > |4|650|650|38923|648.7|1|39|0|38923|100%| > |4|800|800|47916|798.5|1|17|0|47916|100%| > |4|950|950|56896|948.2|1|17|0|56896|100%| > |4|1100|1100|65889|1,098.1|1|115|0|65889|100%| > |4|1250|1250|74874|1,247.8|1|101|0|74874|100%| > |4|1400|1400|83818|1,396.8|1|17|0|83818|100%| > |4|1550|1550|92830|1,547.0|1|17|0|92830|100%| > |4|1700|1700|101805|1,696.6|1|11|0|101805|100%| > |4|1850|1850|110785|1,846.3|1|11|0|110785|100%| > |4|2000|1916|113747|1,895.6|10|53108|0|113747|100%| > |4|2150|1916|114825|1,913.6|1|24|83|114742|99%| -- This message is automatically generated by JIRA. 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mod_cluster-issues November 2013