Steven Hartland
Mon, 19 Oct 2009 03:37:09 -0700
Try with something like this, which is the standard set we use on our file serving machines. net.inet.tcp.inflight.enable=0 net.inet.tcp.sendspace=65536 kern.ipc.maxsockbuf=16777216 net.inet.tcp.sendbuf_max=16777216 net.inet.tcp.recvbuf_max=16777216 Regards Steve----- Original Message ----- From: "Adrian Chadd" <adr...@freebsd.org>
To: "Brent Jones" <br...@servuhome.net> Cc: "Hongtao Yin" <ht...@huawei.com>; <freebsd-performance@freebsd.org> Sent: Monday, October 19, 2009 2:36 AM Subject: Re: Comparison of FreeBSD/Linux TCP Throughput performance uhm: kristy# netperf -H 192.168.10.2 -p 22113 -l 10 TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.10.2 (192.168.10.2) port 0 AF_INET Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 8192 65536 65536 10.00 862.48 1 megabyte socket buffers threw an error. I'll see why later. Now, as for why 64k socket buffers gave a slower result than 8k socket buffers... ah. If I change the sending end to use 64k socket buffers: TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.10.2 (192.168.10.2) port 0 AF_INET Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 65536 65536 65536 10.00 916.23 Adrian 2009/10/19 Brent Jones <br...@servuhome.net>:
On Sun, Oct 18, 2009 at 7:55 AM, Adrian Chadd <adr...@freebsd.org> wrote:FYI, I installed netperf on my local p4-D test boxes that I use for other testing. 128 byte send/receive buffers on the client side: kristy# netperf -H 192.168.10.2 -p 22113 -l 10 TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.10.2 (192.168.10.2) port 0 AF_INET Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 8192 128 128 10.00 426.17 1kbyte send/receive buffers: kristy# netperf -H 192.168.10.2 -p 22113 -l 10 TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.10.2 (192.168.10.2) port 0 AF_INET Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 8192 1024 1024 10.00 903.39 8kbyte send/receive buffers: kristy# netperf -H 192.168.10.2 -p 22113 -l 10 TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.10.2 (192.168.10.2) port 0 AF_INET Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 8192 8192 8192 10.00 913.71 Both boxes are 7.2-REL amd64 boxes on 3.4GHz Pentium-D CPUs using some onboard flavour of the intel e1000 NIC: device = '82573E Intel Corporation 82573E Gigabit Ethernet Controller (Copper)' They are connected via a Cisco 3750G L3 switch. In fact, the traffic is routed, rather than switched. My /etc/sysctl.conf: net.inet.icmp.icmplim=0 net.inet.icmp.icmplim_output=0 net.inet.tcp.msl=3000 net.inet.tcp.sendspace=8192 net.inet.tcp.recvspace=8192 kern.maxfilesperproc=65536 kern.maxfiles=262144 kern.ipc.maxsockets=32768 kern.ipc.somaxconn=1024 kern.ipc.nmbclusters=131072 net.inet.ip.fw.enable=0 kern.ipc.somaxconn=10240 2c, Adrian 2009/10/15 Hongtao Yin <ht...@huawei.com>:Hi,Can you try with 64K and up tp 1MB buffers? I see ~1Gbit speeds with my FreeBSD boxes using Broadcom NIC's and cheap Netgear switches. I'm not sure how the original tester got such poor numbers, when my setup is relatively low end, and sustaining Gbit speeds is no major feat. -- Brent Jones br...@servuhome.net
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