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Date:      Thu, 11 Nov 2010 19:35:32 +0000
From:      "rene@reckschwardt.de" <rene@reckschwardt.de>
To:        freebsd-net@freebsd.org
Subject:   ML370 G4 with poor Network Performance and high CPU Load
Message-ID:  <20101111193534.A7D838090AAD@rds11224.i4e-server.de>

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  Hello,

i am new in this Maillist and i use an ML370G4 with FreeBSD 8.1 AMD64. I =

try with netio and TCP. The used Nics are onboard Broadcom=20
(PCI-X133Mhz), an Broadcom PCI-X Nic and an intel PCI-X Nic. The CPU=20
load is around 35% and the performance like this:

Packet size  1k bytes:  99303 KByte/s Tx,  44576 KByte/s Rx.
Packet size  2k bytes:  72043 KByte/s Tx,  75200 KByte/s Rx.
Packet size  4k bytes:  23280 KByte/s Tx,  66072 KByte/s Rx.
Packet size  8k bytes:  55234 KByte/s Tx,  64470 KByte/s Rx.
Packet size 16k bytes:  82485 KByte/s Tx,  74099 KByte/s Rx.
Packet size 32k bytes:  93133 KByte/s Tx,  74992 KByte/s Rx.

I try the following tuning:

kern.ipc.maxsockbuf=3D16777216
net.inet.tcp.sendbuf_max=3D16777216
net.inet.tcp.recvbuf_max=3D16777216
net.inet.tcp.sendbuf_inc=3D16384
net.inet.tcp.recvbuf_inc=3D524288
net.inet.tcp.inflight.enable=3D0
net.inet.tcp.hostcache.expire=3D1

but this is not helpfull, the Load goes to 60% and the Performance is=20
also poor. How can i prevent this Problem?

thanks for response r=E9


P.S. the same Computer with Linux runs perfect with Performance and 1-2% =

Load,


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