linux-kernel - Re: [PATCH] virtio_blk: merge S/G list entries by default

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Message-ID: <20140910164337.GD14199@redhat.com>
Date:	Wed, 10 Sep 2014 19:43:37 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Christoph Hellwig <hch@....de>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org,
	Ming Lei <tom.leiming@...il.com>
Subject: Re: [PATCH] virtio_blk: merge S/G list entries by default

On Mon, Sep 08, 2014 at 10:15:57PM +0200, Christoph Hellwig wrote:
> On Mon, Sep 08, 2014 at 11:18:30AM +0300, Michael S. Tsirkin wrote:
> > Could you respond to Ming Lei's mail, who benchmarked the patch, please?
> 
> I don't really have any additional data or disagreement, not sure what
> I should respond there.

Hmm Ming Lei measured a slowdown with your patch.
Is that expected?
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