Re: bonnie++ uninterruptible under heavy I/O load

From: Baruch Even
Date: Fri Mar 11 2005 - 08:34:36 EST

Fabio Coatti wrote:
Alle 12:35, venerdì 11 marzo 2005, Denis Vlasenko ha scritto:

Unresponsiveness is not 2.6.11 specific (we've seen the same thing on
2.6.10 and 2.6.8), not I/O scheduler specific ("as" and "deadline" behave
the same) and not CPU/SMP specific (reproduced on single P4 HT and single
P3), but only on these two DL585 servers we've seen bonnie++ resisting
kill -9 for tens of seconds.

Of course on request I can provide any other useful info.
Any help is appreciated.

I think Alt-SysRq-T will be interesting to see

Unfortunately this machine is on a remote location, so we don't have access to keyboard. In some days we will be able to have a report of Alt-SysRq-T, but until this of course we can provide any information that can be gathered on a remote shell.

echo t > /proc/sysrq-trigger

will do the job equivalently.


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