Jeff Turner wrote:
Hi,
For the last few months, issues.apache.org/jira has been running out of
memory about once a week. We've finally got it running in a profiler, and
are seeing most of the memory (eg. 486 of 572Mb) used up by char[]
buffers in BodyContentImpl. Here is a sample GC Root -> Object trace:
char[16777218]
cb of org.apache.jasper.runtime.BodyContentImpl
[0] of org.apache.jasper.runtime.BodyContentImpl[7]
outs of org.apache.jasper.runtime.PageContextImpl
[86] of java.lang.Object[101]
pool of org.apache.jasper.util.SimplePool
pool of org.apache.jasper.runtime.JspFactoryImpl
deflt of javax.servlet.jsp.JspFactory
[57] of java.lang.Object[641]
elementData of java.util.Vector
classes of org.apache.catalina.loader.StandardClassLoader [Other]
There seems to be a constantly increasing number of BodyContentImpl
objects in the system:
1 May: 93 Objects (126Mb)
2 May: 107 Objects (263Mb)
3 May: 492 Objects (486MB)
(the first two were taken directly after a full gc)
It appears to be a case of this bug:
http://issues.apache.org/bugzilla/show_bug.cgi?id=37793
Perhaps this bug affects the ASF JIRA in particular (and not most people)
because people occasionally request huge (20-30Mb) pages. There are 23
BodyContentImpls between 33Mb and 10Mb in the last dump, and due to the
pooling, these all stick around taking up memory.
Could anyone comment on this issue? Remy seemed to think it was 'as
intended', and the bug is marked WONTFIX. I'm happy to provide yourkit
memory dumps or access to the server if necessary. We're currently
running 5.5.16.
Have you try to set org.apache.jasper.runtime.JspFactoryImpl.USE_POOL to
false?
(adding -Dorg.apache.jasper.runtime.JspFactoryImpl.USE_POOL=false to
CATALINA_OPTS environment variable).
Cheers
Jean-Frederic
Thanks!
Jeff
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