OOM error

[Y Srinivas Ramakrishna]

Hi Anuj --

> > Exception in thread "CompilerThread1" java.lang.OutOfMemoryError: requested
> > 32756 bytes for ChunkPool::allocate. Out of swap space?

This is a request for 32 KB (not 32 MB as in the bug you quoted below).

You should probably check pmap -rs on the process. You are almost certainly out of
C heap space (so, as you suggested below, reducing the Java heap might help by
freeing up your apparently scarce 32-bit virtual address space to the c-heap).
I note, though, that you have a rather modest (~2.6 GB?) heap, so on Solaris
for example, i'd expect plenty of free address space in the sbrk segment. What
platform are you on?

-- ramki.

> > We are already setting
> >
> > -XX:ReservedCodeCacheSize=64M
> >
> >
> >
> > As per discussion in thread
> >
> > http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5075468
> >
> >
> >
> > I am sure we have enough heap as well as swap space available.
> >
> >
> >
> > I am wondering above bug is fixed for 1.5.13?
> >
> > What is better option increasing -XX:ReservedCodeCacheSize or decreasing
> > heap size so that we have more non heap memory available?
> >
> >
> >
> > Thanks
> >
> > ANuj
> >
> >
> >
> >
> >
> >  Jvm parameter
> >
> > with -Xms2560m  -Xmx2560m -XX:MaxPermSize=256M
> >
> > -XX:+UseConcMarkSweepGC
> >
> > -XX:+UseParNewGC
> >
> > -XX:+CMSParallelRemarkEnabled
> >
> > -XX:+UseCMSCompactAtFullCollection
> >
> > -XX:CMSFullGCsBeforeCompac
> >
> > tion=0 -XX:+HandlePromotionFailure
> >
> > -XX:CMSInitiatingOccupancyFraction=68
> >
> >  -XX:+UseCMSInitiatingOccupancyOnly –
> >
> > -XX:CMSMarkStackSize=32M
> >
> > XX:CodeCacheMinimumFreeSpace=2M
> >
> > -XX:ReservedCodeCacheSize=64M
> >
> > -XX:NewSize=512M -XX:MaxNewSize=51
> >
> > 2M -XX:MaxTenuringThreshold=6 -XX:SurvivorRatio=5 -XX:TargetSurvivorRatio=
> >
> >  -XX:+CMSPermGenSweepingEnabled -XX:+CMSClassUnloadingEnabled
> > -XX:CMSMaxAbortablePrecleanTime=1
> >
> >
> >
> >
> >
> > wlstart:
> >
> > par new generation   total 449408K, used 50959K [0x46400000, 0x66400000,
> > 0x66400000)
> >
> >   eden space 374528K,   0% used [0x46400000, 0x46400000, 0x5d1c0000)
> >
> >   from space 74880K,  68% used [0x61ae0000, 0x64ca3ed0, 0x66400000)
> >
> >   to   space 74880K,   0% used [0x5d1c0000, 0x5d1c0000, 0x61ae0000)
> >
> >  concurrent mark-sweep generation total 2097152K, used 1071568K [0x66400000,
> > 0xe6400000, 0xe6400000)
> >
> >  concurrent-mark-sweep perm gen total 211688K, used 127055K [0xe6400000,
> > 0xf32ba000, 0xf6400000)
> >
> > }
> >
> > , 0.5049826 secs]
> >
> >
> >
> > Exception in thread "CompilerThread1" java.lang.OutOfMemoryError: requested
> > 32756 bytes for ChunkPool::allocate. Out of swap space?
> >
> > Java Result: 1
> 
> 
> 
> -- 
> I would remember that if researchers were not ambitious
> probably today we haven't the technology we are using!