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[Bug 712958] Kernel Problems Under Multi-User Loads

https://bugzilla.novell.com/show_bug.cgi?id=712958

https://bugzilla.novell.com/show_bug.cgi?id=712958#c34


--- Comment #34 from Jiri Slaby <jslaby@xxxxxxxxxx> 2011-08-24 15:45:40 UTC ---
(In reply to comment #32)
(In reply to comment #30)
Created an attachment (id=447246)
--> (http://bugzilla.novell.com/attachment.cgi?id=447246) [details] [details]
Output of dmesg after -c -s and then sysrg-trigger to t

This still doesn't contain anything useful (any traces):
$ head bug-712958_dmesg.out
.000000
[631329.878618] .se->statistics.exec_max : 1.528704
[631329.878618] .se->statistics.slice_max : 1.122945

Why is this crap a part of sysrq-t output at all?

The only option here is to increase the log buffer. It can be done by the
log_buf_len kernel option. Something like log_buf_len=1000000. So if you are
going to reboot, pass this in. Then, when you encounter this weird behaviour,
repeat the process with dmesg+sysrq-trigger. Thanks.

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