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SubjectRe: bonnie++ uninterruptible under heavy I/O load
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.

Baruch

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