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[Xen-devel] Re: [PATCH] xen/blkback: Don't let in-flight requests defer

To: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Subject: [Xen-devel] Re: [PATCH] xen/blkback: Don't let in-flight requests defer pending ones.
From: Daniel Stodden <daniel.stodden@xxxxxxxxxx>
Date: Mon, 27 Jun 2011 11:42:28 -0700
Cc: "Vincent, Pradeep" <pradeepv@xxxxxxxxxx>, Xen <xen-devel@xxxxxxxxxxxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx>
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On Mon, 2011-06-27 at 10:03 -0400, Konrad Rzeszutek Wilk wrote:
> > In the case at hand, increasing the ring size was way more productive.
> > At which point the queue depth multiplies as well. And I currently
> > expect that the longer it gets the more urgent the issue you describe
> > will be.
> You wouldn't have patches for that somewhere tucked away? I am going over
> the patches for 3.1 xen-blkback and was thinking to have them all queued up 
> and
> test them all at once..

I was going to send the kernel patch right after, just to discover that
xen-blkback lacks some of the synchronization items the original one was
based on. It's coming, but it's rather going to be a series.


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