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On 02/24/2009 07:39 PM, Konstantin Svist wrote:
Konstantin Svist wrote:
Kevin Martin wrote:
I'm getting some strange things happening on F10 lately. In a terminal session if I "ps -ef" or "w" or "ls" or anything of that nature the command runs (sometimes) but never returns the prompt. Also, my loadavg seems to go sky high but "top" doesn't necessarily show anything using much CPU (actually, top will often show that my cpu utilization is 90+% idle while my loadavg is upwards of 10). I can usually shutdown my "gui"fied apps (like Thunderbird, Firefox, VirtualBox) but if I try and reboot the reboot hangs while trying to shutdown "automount" and I have to cycle the power on the box. I'm running the latest updates including kernel 2.6.27.15-170.2.24.fc10.i686. Any thoughts or suggestions are appreciated.
Thanks.
Kevin
Check the %wa field in top - most likely the CPU is busy with some I/O accesses (probably the HD). I always look at the %id to get the % CPU amount actually used because %wa is not added to %system or %user
Instead of power cycling, use REISUB - it should be easier on your file system (need to enable it with "kernel.sysrq = 1" in /etc/sysctl.conf)
Looks like I misread - now I see that you wrote that idle is 90+... REISUB still applies though - http://fosswire.com/2007/09/08/fix-a-frozen-system-with-the-magic-sysrq-keys...
Thanks for the tip. I edited sysctl.conf and rebooted. Using the key sequence, I can reboot my machine when things are good. But, just a few minutes ago, it locked up completely. I was looking at a frozen screen and trying the alt-sysrq REISUB did nothing. I had to hit the power switch. Also, I'm unable to ssh into the box when its locked up.
Nothing seems to hit /var/log/messages right before the lockups. Is there any other location I can look at for post-mortem clues?
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Steve