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Date: Wed, 02 Feb 2011 10:26:09 -0800
From: Shirley Ma <mashirle@...ibm.com>
To: "Michael S. Tsirkin" <mst@...hat.com>
Cc: Sridhar Samudrala <sri@...ibm.com>,
Steve Dobbelstein <steved@...ibm.com>,
David Miller <davem@...emloft.net>, kvm@...r.kernel.org,
mashirle@...ux.vnet.ibm.com, netdev@...r.kernel.org
Subject: Re: Network performance with small packets
On Wed, 2011-02-02 at 20:20 +0200, Michael S. Tsirkin wrote:
> How many packets and bytes per interrupt are sent?
> Also, what about other values for the counters and other counters?
>
> What does your patch do? Just drop packets instead of
> stopping the interface?
>
> To have an understanding when should we drop packets
> in the guest, we need to know *why* does it help.
> Otherwise, how do we know it will work for others?
> Note that qdisc will drop packets when it overruns -
> so what is different? Also, are we over-running some other queue
> somewhere?
Agreed. I am trying to put more debugging output to look for all these
answers.
Shirley
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