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Date: Tue, 17 Jul 2007 06:22:03 -0700
From: "Veeraiyan, Ayyappan" <ayyappan.veeraiyan@...el.com>
To: "Jeff Garzik" <jeff@...zik.org>
Cc: <netdev@...r.kernel.org>, <arjan@...ux.intel.com>,
<akpm@...ux-foundation.org>,
"Kok, Auke-jan H" <auke-jan.h.kok@...el.com>, <hch@...radead.org>,
<shemminger@...ux-foundation.org>, <nhorman@...driver.com>,
<inaky@...ux.intel.com>, <mb@...sch.de>
Subject: RE: [PATCH 0/1] ixgbe: Support for Intel(R) 10GbE PCI Express adapters - Take #2
On 7/10/07, Jeff Garzik <jeff@...zik.org> wrote:
Veeraiyan, Ayyappan wrote:
> On 7/10/07, Jeff Garzik <jeff@...zik.org> wrote:
>> Ayyappan.Veeraiyan@...el.com wrote:
>>
> I will post the performance numbers later today..
Sorry for not responding earlier. We faced couple of issues like setup,
and false alarms..
Anyway here are the numbers..
Recv Send Send Utilization Service
Demand
SocketSocketMessageElapsed Send Recv Send Recv
Size Size Size Time Throughput local remotelocal remote
Bytes Bytes Bytes sec 10^6bits/s % s % s us/KB us/KB
87380 65536 128 60 2261.34 13.82 4.25 4.006 1.233
128
87380 65536 256 60 3332.51 14.19 5.67 2.79 1.115
256
87380 65536 512 60.01 4262.24 14.38 6.9 2.21 1.062
512
87380 65536 1024 60 4659.18 14.4 7.39 2.026 1.039
1024
87380 65536 2048 60.01 6177.87 14.36 14.99 1.524 1.59
2048
87380 65536 4096 60.01 9410.29 11.58 14.6 0.807 1.017
4096
87380 65536 8192 60.01 9324.62 11.13 14.33 0.782 1.007
8192
87380 65536 16384 60.01 9371.35 11.07 14.28 0.774 0.999
16384
87380 65536 32768 60.02 9385.81 10.83 14.27 0.756 0.997
32768
87380 65536 65536 60.01 9363.5 10.73 14.26 0.751 0.998
65536
TCP SENDFILE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to n0417
(10.0.4.17) port 0 AF_INET : cpu bind
Recv Send Send Utilization Service Demand
Socket Socket Message Elapsed Send Recv Send Recv
Size Size Size Time Throughput local remote local remote
bytes bytes bytes secs. 10^6bits/s % S % S us/KB us/KB
87380 65536 65536 60.02 9399.61 2.22 14.53 0.155
1.013
87380 65536 65536 60.02 9348.01 2.46 14.39 0.173
1.009
87380 65536 65536 60.02 9403.36 2.26 14.37 0.158
1.001
87380 65536 65536 60.01 9332.22 2.23 14.51 0.157
1.019
Bidirectional test.
87380 65536 65536 60.01 7809.57 28.66 30.02 2.405 2.519
TX
87380 65536 65536 60.01 7592.90 28.66 30.02 2.474 2.591
RX
------------------------------
87380 65536 65536 60.01 7629.73 28.32 29.64 2.433 2.546
RX
87380 65536 65536 60.01 7926.99 28.32 29.64 2.342 2.450
TX
Signle netperf stream between 2 quad-core Xeon based boxes. Tested on
2.6.20 and 2.6.22 kernels. Driver uses NAPI and LRO.
To summarize, we are seeing the line-rate with NAPI (single Rx queue)
and Rx CPU utilization is around 14%. In back to back scenarios, NAPI
(combined with LRO) performs clearly better. In multiple client
scenarios, Non-NAPI with multiple Rx queues performs better. I am
continuously doing more benchmarking and submit a patch to pick one this
week.
But going forward if NAPI supports multiple Rx queues natively, I
believe that would perform much better in most of the cases.
Also, did you get a chance to review the driver take #2? I like to
implement the review comments (if any) as early as possible, and submit
another version.
Thanks...
Ayyappan
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