[mythtv-users] Random lockups on Mythbackend
kevin at familyross.net
Mon Dec 20 04:48:35 UTC 2010
On 12/19/2010 7:46 PM, dwoody1 wrote:
> Could cpu usage between 88% - 95% be causing my problem?
No. High CPU usage will not cause a computer to lockup, unless the CPU
I've had some lockups in the past. I enabled netconsole, so the kernel
would send its log messages to another computer on the network, and I
enabled nmi_watchdog (to automatically reboot the computer when it
hangs), and I also enabled a couple sysctls:
kernel.panic = 5
kernel.panic_on_oops = 1
I've found two causes of lockups (on two different computers) that the
above changes allowed me to find. One was a bad mceusb receiver. For
whatever reason, it would occasionally cause the computer to hang hard.
Swapping with another one fixed that problem. Another one was a corrupt
XFS filesystem. xfs_repair would say it was fine, but I could reproduce
the problem at will by running xfs_fsr. Copying to a fresh new XFS
filesystem fixed that problem.
Hope this helps!
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