Re: [Patch 5/7] synchronous block I/O delays
From: Andi Kleen
Date: Mon Feb 27 2006 - 09:16:26 EST
Shailabh Nagar <nagar@xxxxxxxxxxxxxx> writes:
> Record time spent by a task waiting for completion of
> userspace initiated synchronous block I/O. This can help
> determine the right I/O priority for the task.
I think it's a good idea to have such a statistic by default.
Can you add a counter that is summed up in task_struct and reports
in /proc/*/stat so that it could be displayed by top?
This way it would be useful even with "normal" user space.
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