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Date: Mon, 11 Jan 2010 17:31:42 +0200
From: Avi Kivity <avi@redhat.com>
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Subject: Re: [Qemu-devel] Re: [RFC][PATCH] performance improvement for windows
	guests, running on top of virtio block device
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To: Anthony Liguori <anthony@codemonkey.ws>
Cc: Vadim Rozenfeld <vrozenfe@redhat.com>, Dor Laor <dlaor@redhat.com>, qemu-devel <qemu-devel@nongnu.org>, Christoph Hellwig <hch@lst.de>

On 01/11/2010 05:22 PM, Anthony Liguori wrote:
>
> Based on our experiences with virtio-net, what I'd suggest is to make 
> a lot of tunable options (ring size, various tx mitigation schemes, 
> timeout durations, etc) and then we can do some deep performance 
> studies to see how things interact with each other.
>
> I think we should do that before making any changes because I'm deeply 
> concerned that we'll introduce significant performance regressions.
>

I agree.  We can start with this patch, with a tunable depth, defaulting 
to current behaviour.

-- 
error compiling committee.c: too many arguments to function