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Date: Sun, 13 Nov 2011 17:00:30 +0200 From: Sasha Levin <levinsasha928@...il.com> To: "Michael S. Tsirkin" <mst@...hat.com> Cc: penberg@...nel.org, kvm@...r.kernel.org, mingo@...e.hu, asias.hejun@...il.com, gorcunov@...il.com, Krishna Kumar <krkumar2@...ibm.com>, Rusty Russell <rusty@...tcorp.com.au>, virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org Subject: Re: [RFC] kvm tools: Implement multiple VQ for virtio-net On Sun, 2011-11-13 at 12:24 +0200, Michael S. Tsirkin wrote: > On Sat, Nov 12, 2011 at 12:12:01AM +0200, Sasha Levin wrote: > > This is a patch based on Krishna Kumar's patch series which implements > > multiple VQ support for virtio-net. > > > > The patch was tested with ver3 of the patch. > > > > Cc: Krishna Kumar <krkumar2@...ibm.com> > > Cc: Michael S. Tsirkin <mst@...hat.com> > > Cc: Rusty Russell <rusty@...tcorp.com.au> > > Cc: virtualization@...ts.linux-foundation.org > > Cc: netdev@...r.kernel.org > > Signed-off-by: Sasha Levin <levinsasha928@...il.com> > > Any performance numbers? I tried finding a box with more than two cores so I could test it on something like that as well. >From what I see this patch causes a performance regression on my 2 core box. I'll send an updated KVM tools patch in a bit as well. Before: # netperf -H 192.168.33.4,ipv4 -t TCP_RR MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.33.4 (192.168.33.4) port 0 AF_INET : first burst 0 Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 16384 87380 1 1 10.00 11160.63 16384 87380 # netperf -H 192.168.33.4,ipv4 -t UDP_RR MIGRATED UDP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.33.4 (192.168.33.4) port 0 AF_INET : first burst 0 Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 122880 122880 1 1 10.00 12072.64 229376 229376 # netperf -H 192.168.33.4,ipv4 -t TCP_STREAM MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.33.4 (192.168.33.4) port 0 AF_INET Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.00 4654.50 netperf -H 192.168.33.4,ipv4 -t TCP_STREAM -- -m 128 MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.33.4 (192.168.33.4) port 0 AF_INET Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 128 10.00 635.45 # netperf -H 192.168.33.4,ipv4 -t UDP_STREAM MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.33.4 (192.168.33.4) port 0 AF_INET Socket Message Elapsed Messages Size Size Time Okay Errors Throughput bytes bytes secs # # 10^6bits/sec 122880 65507 10.00 113894 0 5968.54 229376 10.00 89373 4683.54 # netperf -H 192.168.33.4,ipv4 -t UDP_STREAM -- -m 128 MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.33.4 (192.168.33.4) port 0 AF_INET Socket Message Elapsed Messages Size Size Time Okay Errors Throughput bytes bytes secs # # 10^6bits/sec 122880 128 10.00 550634 0 56.38 229376 10.00 398786 40.84 After: # netperf -H 192.168.33.4,ipv4 -t TCP_RR MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.33.4 (192.168.33.4) port 0 AF_INET : first burst 0 Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 16384 87380 1 1 10.00 8952.47 16384 87380 # netperf -H 192.168.33.4,ipv4 -t UDP_RR MIGRATED UDP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.33.4 (192.168.33.4) port 0 AF_INET : first burst 0 Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 122880 122880 1 1 10.00 9534.52 229376 229376 # netperf -H 192.168.33.4,ipv4 -t TCP_STREAM MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.33.4 (192.168.33.4) port 0 AF_INET Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.13 2278.23 # netperf -H 192.168.33.4,ipv4 -t TCP_STREAM -- -m 128 MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.33.4 (192.168.33.4) port 0 AF_INET Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 128 10.00 623.27 # netperf -H 192.168.33.4,ipv4 -t UDP_STREAM MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.33.4 (192.168.33.4) port 0 AF_INET Socket Message Elapsed Messages Size Size Time Okay Errors Throughput bytes bytes secs # # 10^6bits/sec 122880 65507 10.00 136930 0 7175.72 229376 10.00 16726 876.51 # netperf -H 192.168.33.4,ipv4 -t UDP_STREAM -- -m 128 MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.33.4 (192.168.33.4) port 0 AF_INET Socket Message Elapsed Messages Size Size Time Okay Errors Throughput bytes bytes secs # # 10^6bits/sec 122880 128 10.00 982492 0 100.61 229376 10.00 249597 25.56 -- Sasha. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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