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| From: | Benoît Canet |
| Subject: | Re: [Qemu-devel] [PATCH] block: fix bdrv_exceed_iops_limits wait computation |
| Date: | Wed, 20 Mar 2013 16:27:14 +0100 |
| User-agent: | Mutt/1.5.21 (2010-09-15) |
> Now there is no oscillation and the wait_times do not grow or shrink > under constant load from dd(1). > > Can you try this patch by itself to see if it fixes the oscillation? On my test setup it fixes the oscillation and lead to an average 149.88 iops. However another pattern appear. iostat -d 1 -x will show something between 150 and 160 iops for several sample then a sample would show around 70 iops to compensate for the additional ios and this cycle restart. Best regards Benoît
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