PJ wrote:
This may or may not be CentOS related, but am out of ideas at this point
and wanted to bounce this off the list.
I'm running a CentOS 5.5 server, running the latest kernel 2.6.18-194.32.1.el5.
Almost everyday around 3:30 AM the server completely locks up and has to
be power cycled before it will come back online.
(this means someone hat to wake up and reboot the server, oh how I love
being an internet janitor! :)
Please log of the Internet. We are cleaning it. You may log back on later.
<snip>
I was able to pull this from /var/log/messages, this happens just
seconds before locking up completely...
Mar 8 03:33:18 web1 kernel: INFO: task wget:13608 blocked for more than
120 seconds.
Mar 8 03:33:19 web1 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Mar 8 03:33:19 web1 kernel: wget D ffff810001004420 0
13608 13607 (NOTLB)
Mar 8 03:33:19 web1 kernel: ffff81007bc7bc78 0000000000000086 ffff81007bc7bd88 ffff81000100d3f8 Mar 8 03:33:19 web1 kernel: ffff81007bc7bbf0 0000000000000007 ffff8100849db0c0 ffffffff80308b60 Mar 8 03:33:19 web1 kernel: 00013a2964cdf439 0000000000003237 ffff8100849db2a8 0000000064c82eae Mar 8 03:33:19 web1 kernel: Call Trace: Mar 8 03:33:20 web1 kernel: [<ffffffff80063c6f>] __mutex_lock_slowpath+0x60/0x9b
<snip> Anyone else smell an OOM killer? But it's clearly whatever the wget's after that's killing the system.
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