The stock tomcat 6.0.24 is poorly maintained by CentOS/RedHat. We've seen several issues with latest 6.0.24.x tomcat builds.
We also found tomcat6-6.0.43+ to be alot more stable. Though its not in public CentOS repos, Marcus has a build that works well and has been tested in very large environments with uptime of 30+ days. (30+ days cycle is broken due to scheduled maintenance - not crash).. Try tomcat from repo below, http://marcus.mlsorensen.com/cloudstack-extras/tomcat6/ let me know how it works.. On 10/15/15 1:32 AM, windyii wrote: > Hi all, > > > > Our CloudStack 4.5.2 with tomcat6 was constantly running out of memory in a > few days. > > We changed JAVA_OPS to "-Xmx4g" in tomcat6.conf. But it didn't help. > > We used apache benchmark to send 100000 http requests to a fresh installed > CloudStack 4.5.2 with no zone setup. > > ab -n 100000 -c 1 http://localhost:8080/client/ > > The CS always run out of memory after 35,000 requests. > > The same to a fresh CloudStack 4.3.0. > > A clean tomcat6 on another CentOS host passed the ab test. > > Finally, we installed tomcat7 and change CS to use tomcat7. Both CS 4.5.2 > and CS 4.3.0 passed ab test. > > We suppose it is a serious issue. > > Is there any idea? > > > > Our setup: > > CS 4.5.2/Centos 6.5/Tomcat 6.0.24 > > Tomcat 7.0.33 > > > > -- > > Qian > > > >
