Re: TG3: very high CPU usage

[Mark Williams (MWP)]

> [you may want to use linux-net@xxxxxxxxxxxxxxx instead of linux-kernel; its 
> possible that the tg3 folk lost your email in the flood]
> 
> At 08:17 PM 20/01/2004, Andreas Hartmann wrote:
> >Hi,
> >
> >I searched for tg3 in lkml and found one more posting, dealing with these 
> >problems (subject):
> >
> >bcm5705 with tg3 driver and high rx load -> bad system responsiveness
> >
> >There really seems to be a problem. Ronald Wahl pointed out, that the 
> >driver from
> >http://www.broadcom.com/drivers/downloaddrivers.php does not have the 
> >problem. Maybe, we could both look for drivers from the hardware producer 
> >and test them? I will do it when I'm back at work in two weeks.
>
> how exactly are you "triggering" the high CPU load?  i.e. what is the 
> server doing?  file-sharing?  NFS?  CIFS?  something else?

Any transfer (Apache, FTP, Samaba), causes it.

> i have LOTS of IBM xSeries servers (IBM x335, x345, x440), all of which 
> have Broadcom BCM 5700 (tg3) NICs.
> i drive them all at wire-rate gig-e with iSCSI.
> 
> i'm yet to see any 'excessive' CPU load associated with tg3 relative to 
> tigon2 (AceNIC2) and Intel e1000 NICs.

It might not effect those cards.
I think the TG3 driver was changed to support the card im trying to use (Netgear GA302T) and similar.
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