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SubjectRe: Disk statistics tool for Linux ?
"Stephen C. Tweedie" wrote:

> Hi,
>
> On Tue, 16 Feb 1999 23:20:35 +0000, Francois Desarmenien
> <desar@club-internet.fr> said:
>
> > In a recent threat on linux-kernel, I read something like there wasn't
> > anything like sar or vmstat tools.
>
> > While should be doable using the /proc filesystem, I'm wondering about disk
> > activity statistics:
>
> If you'd been reading l-k, you would have seen several threads refering
> to an existing tool to profile disk activity in the manner of sar!
>

I am now, and I find it really amazing, because of those tons of informations !

>
> > Using big database like Oracle requires a very fine tuning of disk
> > activity, like CPU wait I/O, disk percent I/O busy, I/O thoughtput on
> > so on
>
> ftp://ftp.uk.linux.org/pub/linux/sct/fs/sard-0.3.tar.gz
>

Thanks for the pointer, I'll try it soon.

>
> provides disk % busy, average queue, CPU wait times, throughput and
> number of IOs per second read/write for each disk and each partition.
> I hope to fold these into the main kernel at some point.
>

Yes, I think it shoud be very nice. Maybe a "Performance-Tuning-HOWTO"
could be a nice idea, too (I know, I know, doc patches welcome :-)

>
> --Stephen
>
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François Désarménien



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