Re: [neilb@xxxxxxx: Re: MD request counter broken on 4.0-rc5 RAID1]

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On Wed, Apr 01, 2015 at 10:07:25PM +1100, NeilBrown wrote:

> On Wed, 1 Apr 2015 15:39:47 +0800 Gu Zheng <guz.fnst@xxxxxxxxxxxxxx> wrote:
> 
> > Hi Neil,
> > One question about md io stats account:
> > I find that we just accounting disk_stats.sectors[rw] and disk_stats.ios[rw] at
> > md_make_request, but I did not find accounting disk_stats.ticks[rw], do not we
> > need it? or I missed something?
> 
> No, I don't think you are missing anything.  md doesn't track 'ticks' - and
> no-one has ever complained.

Hmm, yes, I guess "working" before was "0% utilization". :)

Simon-
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