netdev - Re: [PERF RESULTS] virtio and vhost-net performance enhancements

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Date:	Thu, 26 May 2011 21:51:32 +0530
From:	Krishna Kumar2 <krkumar2@...ibm.com>
To:	Shirley Ma <xma@...ibm.com>
Cc:	Christian Borntraeger <borntraeger@...ibm.com>,
	Carsten Otte <cotte@...ibm.com>, habanero@...ux.vnet.ibm.com,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	kvm@...r.kernel.org, lguest@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
	linux390@...ibm.com, "Michael S. Tsirkin" <mst@...hat.com>,
	netdev@...r.kernel.org, Rusty Russell <rusty@...tcorp.com.au>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Steve Dobbelstein <steved@...ibm.com>,
	Tom Lendacky <tahm@...ux.vnet.ibm.com>,
	virtualization@...ts.linux-foundation.org
Subject: Re: [PERF RESULTS] virtio and vhost-net performance enhancements

Shirley Ma <xma@...ibm.com> wrote on 05/26/2011 09:12:22 PM:

> Could you please try TCP_RRs as well?

Right. Here's the result for TCP_RR:

__________________________________
#       RR%     SD%     CPU%
__________________________________
1       4.5       -31.4    -27.9
2       5.1       -9.7      -5.4
4       60.4     -13.4     38.8
8       67.8     -13.5     45.0
16     55.8     -8.0       43.2
32     66.9     -14.1     43.3
64     47.2     -23.7     12.2
96     29.7     -11.8     14.3
128    8.0       2.2       10.7
___________________________________
BW: 37.3%   SD: -6.7%   CPU: 15.7%
___________________________________

Thanks,

- KK

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