topic Re: bcm5700 performance on a DL 380? in Operating System - Linux

bcm5700 performance on a DL 380?

Greg Wojtak — Wed, 07 Apr 2004 15:27:23 GMT

I built the HP supported bcm5700 driver for RedHat ES 3 and am using it, but I have noticied that network performance is about 10x slower than using the RedHat supplied tg3 module. Anyone have any clue where I could begin to check to see what the problem is?

Re: bcm5700 performance on a DL 380?

Stuart Browne — Wed, 07 Apr 2004 17:47:46 GMT

For starters, don't use the RH supplied TG3 module. Use the HP supplied 'bcm5700' driver.

This will fix most of your issues.

Re: bcm5700 performance on a DL 380?

Jeroen Peereboom — Thu, 08 Apr 2004 02:04:06 GMT

Did you set the speed as a module option?
I would start checking speed and duplex settings...

JP.

Re: bcm5700 performance on a DL 380?

Greg Wojtak — Thu, 08 Apr 2004 09:03:18 GMT

Stuart, I'm saying the Red Hat tg3 module works *better* than the HP supplied bcm5700 module. I have forced 100/Full on the Nic, as it is set on the switch side. I did this by editing /etc/modules.conf:

alias eth0 bcm5700
options bcm5700 line_speed=100 full_duplex=1 auto_speed=0

[root@localhost root]# mii-tool eth0
eth0: 100 Mbit, full duplex, link ok

However, it takes about 2.5 minutes to transfer a file that takes 13 seconds to transfer when using the tg3 module.

Re: bcm5700 performance on a DL 380?

Steven E. Protter — Thu, 08 Apr 2004 09:08:15 GMT

There does seem to be a network driver issue.

This current thread though SuSe shows a common thread, the NIC driver.

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=538249

SEP