Memory Leak With JRuby/Tomcat
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Key: JRUBY-5378
URL: http://jira.codehaus.org/browse/JRUBY-5378
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.6RC1, JRuby 1.5.3
Environment: jdk 1.6.0_22, tomcat 5.5 & 6, win32 & os x, rails 2.3.9
(or 2.3.4), jdbc mysql adapter
Reporter: Hamed Hashemi
I've been experiencing obvious memory leaks running JRuby with Tomcat using
warbler, and have narrowed it down to make it happen for on a clean Rails app
rendering a blank HTML page (basically just processing any HTTP request that
goes through the Rails dispatcher, doesn't happen with static files).
My environment is Tomat 6 (or 5.5), JRuby 1.6RC1 (also tried 1.5.3), Rails
2.3.9, jdbcmysql-adapter with the war being compiled using Warbler. Tried this
using both OS X and Windows.
Using a profiler, besides many Object and char arrays, I see instances of
org.jruby.runtime.callsite.NormalCachingCallSite increasing.
Memory stats
tomcat restart - 210,500 KB
request /itest/test - 303,332 KB
request /itest/test - 302,316 KB
request /itest/test - 302,376 KB
request /itest/test - 302,452 KB
etc
After 100 requests, memory ends at 360,592 KB. Each request takes up about 60KB
of memory. Running it under profiler and calling GC, does not change memory so
the heap is still being used up.
This is the link to the war file I'm using. Hopefully it's something as easy as
included jar or lib is the culprit. It's pretty easy to reproduce this on OS X
and watching the memory grow.
http://dl.dropbox.com/u/2178278/itest.war
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