Re: Disk Percent Busy, out of whack??

[DrFranken <midrange@xxxxxxxxxxxx>]

NOT the Load Source (As noted in original comment) as these drives are 
all in an iASP. (The UNIT Numbers below all actually have '400' in front 
of them.)

        - Larry "DrFranken" Bolhuis

www.frankeni.com
www.iDevCloud.com
www.iInTheCloud.com

On 9/30/2014 4:12 PM, Tsvetan Marinov wrote:

> Maybe it's because this is the LIC unit and CRTNWSTG is using the LIC API's
> for the command.
> On 30 Sep 2014 19:26, "DrFranken" <midrange@xxxxxxxxxxxx> wrote:
>
> > Elapsed time:   00:01:00
> >
> >       Pct   I/O     Rqs   Read  Wrt  Read  Write   %
> > Unit Full  Rqs     Sz(K)  Rqs  Rqs    K     K    Busy
> > 1    74.9  326.1   38.8   .0  326.1   .0   38.8   48
> > 2    74.9  313.7   40.0   .0  313.7   .0   40.0    2
> > 3    74.9  315.3   40.0   .0  315.3   .0   40.0    2
> > 4    74.9  316.2   40.0   .0  316.2   .0   40.0    2
> > 5    74.9  317.5   39.7   .0  317.5   .0   39.7    2
> > 6    74.9  322.8   39.1   .0  322.8   .0   39.1    2
> > 7    74.9  317.8   39.7   .0  317.8   .0   39.7    2
> > 8    74.9  316.5   39.9   .0  316.5   .0   39.9    2
> > 9    74.9  319.7   39.4   .0  319.7   .0   39.4    2
> >
> > All above drives are identical. (15K 140G SAS)
> > All are in the same RAID set.
> > All contain RAID Stripe data.
> > Power8, i 7.2, Internal RAID controller.
> > These drives (and the entire RAID set) are an iASP, so Drive 1 above is
> > NOT the load source.
> >
> > ONLY job running on these drives is CRTNWSSTG.
> >
> > So over this one minute how can 1 of the drives be 48 percent busy and the
> > others only 2%? The seemingly insignificant difference in I/Os just doesn't
> > seem like it could possibly cause that large delta in percent busy!
> >
> > --
> >
> >          - Larry "DrFranken" Bolhuis
> >
> > www.frankeni.com
> > www.iDevCloud.com
> > www.iInTheCloud.com
> > --
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