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Date: Wed, 10 Sep 2014 19:43:37 +0300
From: "Michael S. Tsirkin" <mst@redhat.com>
To: Christoph Hellwig <hch@lst.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>, Jens Axboe <axboe@kernel.dk>,
        linux-kernel@vger.kernel.org,
        virtualization@lists.linux-foundation.org,
        Ming Lei <tom.leiming@gmail.com>
Subject: Re: [PATCH] virtio_blk: merge S/G list entries by default
Message-ID: <20140910164337.GD14199@redhat.com>
References: <1410044994-14943-1-git-send-email-hch@lst.de>
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 <20140908081830.GA32268@redhat.com>
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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?