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Large pages option gives an error with IBM JDK 1.5.0

 
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Vel
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PostPosted: Mon May 01, 2006 4:12 pm    Post subject: Large pages option gives an error with IBM JDK 1.5.0 Reply with quote



I tried to use the large pages in my java application by specifying the
-Xlp option.

When launching the JVM, it throws the following errors and quits.

<errors>
JVMJ9GC032E System configuration does not support option '-Xlp'
JVMJ9VM015W Initialization error for library j9gc23(2): Failed to
initialize, parsing command line
Could not create the Java virtual machine.
</errors>

I did set the OS parameters with the following commands.

echo 2147483647 > /proc/sys/kernel/shmmax
echo 2000 > /proc/sys/vm/nr_hugepages

Environment: RedHat Linux EL 4.0 (2.6.9-11.ELsmp)
JDK: IBM JDK 1.5.0 (java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build
pxi32dev-20051104)
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Linux x86-32
j9vmxi3223-20051103 (JIT enabled)
J9VM - 20051027_03723_lHdSMR
JIT - 20051027_1437_r8
GC - 20051020_AA)
JCL - 20051102)

Please let me know how this can be resolved.

Thank you
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