[mod_cluster-issues] [JBoss JIRA] (MODCLUSTER-522) Memory leak in processing MCMP, wrong apr pool used for allocation
Michal Karm Babacek (JIRA)
issues at jboss.org
Fri Jul 15 08:35:00 EDT 2016
Michal Karm Babacek created MODCLUSTER-522:
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Summary: Memory leak in processing MCMP, wrong apr pool used for allocation
Key: MODCLUSTER-522
URL: https://issues.jboss.org/browse/MODCLUSTER-522
Project: mod_cluster
Issue Type: Bug
Components: Native (httpd modules)
Affects Versions: 1.3.1.Final, 2.0.0.Alpha1
Environment: Solaris 10 x86_64, RHEL 6, Fedora 24, httpd 2.4.6, httpd 2.4.20
Reporter: Michal Karm Babacek
Assignee: Michal Karm Babacek
Priority: Critical
There seems to be a wrong apr pool used for processing certain MCMP commands. We should use short life span pools for immediate processing and server-lifetime pools only for really persistent configuration. In the current state, with 20+ tomcat workers (1 alias and 1 context each) and virtually no client requests, we could see slow, but steady growth of heap allocated memory.
TODO: Investigate the offending logic, make sure we ain't using long-lived pools for immediate processing.
Illustrative memory overview - with constant number of Tomcats:
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