netdev - Re: [PATCH RFC net-next] virtio_net: refill buffer right after being used

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Message-ID: <20110803203020.GB19501@redhat.com>
Date:	Wed, 3 Aug 2011 23:30:20 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Shirley Ma <mashirle@...ibm.com>
Cc:	Mike Waychison <mikew@...gle.com>,
	Rusty Russell <rusty@...tcorp.com.au>, kvm@...r.kernel.org,
	virtualization@...ts.osdl.org, netdev@...r.kernel.org
Subject: Re: [PATCH RFC net-next] virtio_net: refill buffer right after being
 used

On Sat, Jul 30, 2011 at 10:16:15PM -0700, Shirley Ma wrote:
> It averages the latency between each receive by filling only one set of
> buffers vs. either none buffers or 1/2 ring size buffers fill between
> receives.

I see how the overhead of allocating memory is spread more evenly.  Does this
actually help some workloads?
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