Re: Disk Percent Busy, out of whack??

[Tsvetan Marinov <tsetso.marinov@xxxxxxxxx>]

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
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