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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