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SubjectRe: I/O statistics per process?
Date

Try the Linux Trace Toolkit. This should provide you with most I/O
information you need.

www.opersys.com/LTT

Hope it helps.

Samuli Kaski wrote:
>
> I know about sar which can deliver what I want for disks and/or
> partitions. What about if I want to know how much I/O is caused by
> userspace programs?
>
> Looking at the proc-interface in 2.2.xx the necessary bits aren't
> available. The BSD process accounting doesn't provide them either, the
> I/O fields are always 0 the way I read it. Looking at the task_struct, I
> can't see anything related there.
>
> Is I/O caused by userspace processes accounted somewhere? And if it
> isn't is this intentional or are folks just waiting for someone to
> submit a patch? Thanks.
>
> Samuli
>
> -
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--
===================================================
Karim Yaghmour
karym@opersys.com
Operating System Consultant
(Linux kernel, real-time and distributed systems)
===================================================
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