Veda N Ponnusamy wrote:
Hi,
We set the LD_ASSUME_KERNEL=2.2.5 and the hang goes away. But the application
is running at 60% speed !!
Interesting. You could try LD_ASSUME_KERNEL=2.4.1 (the floating stack version of LinuxThreads), it's generally faster than 2.2.5.
Do you know any patches anywhere for this problem ???
Unfortunately, no, Redhat did not release the patch. RH9 is the only platform we've seen this problem. We didn't stress test Fedora Core, but AS-3 works Ok.
So you do have code that can reproduce this problem? It would help a lot if I could get it.
thanks, -hui
P.S. Next time when you see the hang, please try the gdb trick to id the bug. If the process still hangs after attach-detach with gdb, it's something else.
Would strace -p <pid> work as well?
From: http://bugs.mysql.com/bug.php?id=868
One interesting side note is that if you strace the right process, the system
will recover. However, we have still had database corruption when we did this.
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