ML370 G4 with poor Network Performance and high CPU Load

[Pyun YongHyeon]

On Thu, Nov 11, 2010 at 07:35:32PM +0000, rene at reckschwardt.de wrote:
>  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 
> (PCI-X133Mhz), an Broadcom PCI-X Nic and an intel PCI-X Nic. The CPU 
> 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.
> 

And you did perform the test on idle system?(No disk activity, no
other network IOs etc).

Show me the dmesg output of verbose boot and output of "pciconf
-lcbv".

> I try the following tuning:
> 
> kern.ipc.maxsockbuf=16777216
> net.inet.tcp.sendbuf_max=16777216
> net.inet.tcp.recvbuf_max=16777216
> net.inet.tcp.sendbuf_inc=16384
> net.inet.tcp.recvbuf_inc=524288
> net.inet.tcp.inflight.enable=0
> net.inet.tcp.hostcache.expire=1
> 
> but this is not helpfull, the Load goes to 60% and the Performance is 
> also poor. How can i prevent this Problem?
> 
> thanks for response r?
> 
> 
> P.S. the same Computer with Linux runs perfect with Performance and 1-2% 
> Load,
>