Re: [2.5.70] possible problem with /dev/diskstats

[Michael Buesch <fsdeveloper@yahoo.de>]

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On Monday 02 June 2003 07:10, Maneesh Soni wrote:
> On Sat, May 31, 2003 at 10:40:21PM +0000, Michael Buesch wrote:
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> > Hi.
> >
> > I've just played around with my server (that has actualy no load)
> > and I recognized something strange in /dev/diskstats.
> >
> > Documentation/iostats.txt says about diskstats:
> > [SNIP]
> > Field  9 -- # of I/Os currently in progress
> >     The only field that should go to zero. Incremented as requests are
> >     given to appropriate request_queue_t and decremented as they finish.
> > [SNIP]
> >
> > But here is a cat /proc/diskstats:
> >    1    0 ram0 0 0 0 0 0 0 0 0 0 0 0
> >    1    1 ram1 0 0 0 0 0 0 0 0 0 0 0
> >    1    2 ram2 0 0 0 0 0 0 0 0 0 0 0
> >    1    3 ram3 0 0 0 0 0 0 0 0 0 0 0
> >    1    4 ram4 0 0 0 0 0 0 0 0 0 0 0
> >    1    5 ram5 0 0 0 0 0 0 0 0 0 0 0
> >    1    6 ram6 0 0 0 0 0 0 0 0 0 0 0
> >    1    7 ram7 0 0 0 0 0 0 0 0 0 0 0
> >    1    8 ram8 0 0 0 0 0 0 0 0 0 0 0
> >    1    9 ram9 0 0 0 0 0 0 0 0 0 0 0
> >    1   10 ram10 0 0 0 0 0 0 0 0 0 0 0
> >    1   11 ram11 0 0 0 0 0 0 0 0 0 0 0
> >    1   12 ram12 0 0 0 0 0 0 0 0 0 0 0
> >    1   13 ram13 0 0 0 0 0 0 0 0 0 0 0
> >    1   14 ram14 0 0 0 0 0 0 0 0 0 0 0
> >    1   15 ram15 0 0 0 0 0 0 0 0 0 0 0
>
> Rick,
>
> ramdisk stats are also always zero whether you do any IO or not. Any idea
> where this can be corrected.

Hmm, yes, I've had /var on ram0 in this example, but it doesn't show
any statistics for it.

> Thanks
> Maneesh

- -- 
Regards Michael Büsch
http://www.8ung.at/tuxsoft
 16:17:13 up 20 min,  1 user,  load average: 1.00, 0.97, 0.74

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