Sun Java(tm) System Messaging Server 6.2-9.20 (built Jul 15 2010)
libimta.so 6.2-9.20 (built 01:27:24, Jul 15 2010)
Linux myysumail.ysu.edu 2.6.9-89.31.1.ELhugemem #1 SMP Mon Oct 4
22:04:11 EDT 2010 i686 i686 i386 GNU/Linux
The IMAPd process appears to get into a deadlock with pdflush and
kjournald. The mailboxes were initially stored on a disk partition but
I'm in the process of migrating them to a LVM logical partition. Both
partitions are ext3. I worry about using ext2 because a fsck takes
about 90 minutes.
The server has 32GB RAM. Right now Committed_AS is around 4GB, but the
system is lightly loaded. I'm running a 32-bit kernel because the
application vendor doesn't support 64-bit.
I can't upgrade to RHEL5 because the application vendor doesn't support
it. When the deadlock happens it affects parts of /proc. If I run "ps
ax" the "ps" process enters an uninterruptible wait and stays there. I
have to power-cycle the system to return to normal operation.
What are my options? I have SELinux enforcing. Should I disable it? I
have vm.overcommit_memory = 1. Should I set that to 0 or 2? Do I have
to fall back to ext2?
Thanks,
John Dalbec
SunGard HE Luminis 4 system administrator
Youngstown State University
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