Re: Linux Disk Performance/File IO per process

Chris Evans (chris@scary.beasts.org)
Mon, 29 Jan 2001 02:04:15 +0000 (GMT)


On Mon, 29 Jan 2001 Tony.Young@ir.com wrote:

> All,
>
> I work for a company that develops a systems and performance management
> product for Unix (as well as PC and TANDEM) called PROGNOSIS. Currently we
> support AIX, HP, Solaris, UnixWare, IRIX, and Linux.
>
> I've hit a bit of a wall trying to expand the data provided by our Linux
> solution - I can't seem to find anywhere that provides the metrics needed to
> calculate disk busy in the kernel! This is a major piece of information that
> any mission critical system administrator needs to successfully monitor
> their systems.

Stephen Tweedie has a rather funky i/o stats enhancement patch which
should provide what you need. It comes with RedHat7.0 and gives decent
disk statistics in /proc/partitions.

Unfortunately this patch is not yet in the 2.2 or 2.4 kernel. I'd like to
see it make the kernel as a 2.4.x item. Failing that, it'll probably make
the 2.5 kernel.

Cheers
Chris

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