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Date: Fri, 11 Oct 2013 14:25:07 -0500
From: Eric van Gyzen <eric@vangyzen.net>
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To: Maksim Yevmenkin <emax@freebsd.org>
Subject: Re: [rfc] small bioq patch
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Maksim,

The graphs were not attached.  Perhaps the list stripped them.  Could 
you post them on the web instead?

Thanks,

Eric

On 10/11/2013 01:17 PM, Maksim Yevmenkin wrote:
> hello,
>
> i would like to submit the attached bioq patch for review and
> comments. this is proof of concept. it helps with smoothing disk read
> service times and arrear to eliminates outliers. please see attached
> pictures (about a week worth of data)
>
> - c034 "control" unmodified system
> - c044 patched system
>
> graphs show max/avg disk read service times for both systems across 36
> spinning drives. both systems are relatively busy serving production
> traffic (about 10 Gbps at peak). grey shaded areas on the graphs
> represent time when systems are refreshing their content, i.e. disks
> are both reading and writing at the same time.
>
> thanks,
> max
>
>
>
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