Date: Wed, 05 Jul 2006 15:03:35 -0400 From: Kurt Miller <kurt@intricatesoftware.com> To: freebsd-java@freebsd.org, martijn@detrics.com Subject: Re: Apache Tomcat crash on 6.1 Message-ID: <200607051503.35873.kurt@intricatesoftware.com> In-Reply-To: <1152122995.5382.14.camel@detri015.speed.planet.nl> References: <1152082235.30307.19.camel@detri015.speed.planet.nl> <200607051337.16442.lists@intricatesoftware.com> <1152122995.5382.14.camel@detri015.speed.planet.nl>
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Hi Martijn, On Wednesday 05 July 2006 2:09 pm, Martijn Veening wrote: > Thanks Kurt, but an out-of-memory error seems unlikely, it's a > SuperMicro server with 1 Gb of memory and 256 Mb dedicated to the JVM > (by JVM startup-options in catalina.sh). Some ideas: 1) check your datasize ulimit for the login class of the user tomcat is running under. 2) set the X malloc() option (ln -s X /etc/malloc.conf) and see if you get a diagnostic message as to why malloc() is returning NULL. 3) watch the java process memory utilization over time with top or ps -l and look for increasing memory usage. > I added the JVM-parameter -XX:+UseMembar now, but i understand that the > diablo-1.5.0_7 has this turned on by default, so that probably doesn't > help Correct > (the server hasn't crashed since though, but is only up for 10 > hours, so not conclusive). > > It is a 2-processor machine though: does that require tuning ? Nothing in particular comes to mind, but you could look through some of Sun's docs at http://java.sun.com/docs/hotspot/index.html Regards, -Kurt
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