[ipxe-devel] iPXE tg3 implementation is slow

[Huan Truong]

Ok,... 

We have reverted to `dhcp-multi' and the problem still persists. 

So it has to be some time earlier than that. We're currently
investigating/bisecting in the hope of finding out the problem. One
thing that we know for sure is gpxe 1.0.1 doesn't have that problem. It
was released on 6/29.

It doesn't matter which link speed we used, it always breaks with tg3.
We have tried 1000/100. Same result.

Move the cable to the 3com card -- fine again.

And as tg3 doesn't seem to be changed for a while, the problem lies in
another module.



On Fri, 05 Nov 2010 23:03 -0400, "Joshua Oreman" <oremanj at MIT.EDU>
wrote:
> On Fri, Nov 5, 2010 at 10:59 PM, Huan Truong <hnt7438 at truman.edu> wrote:
> > I'm using iPXE now and it is very apparent that iPXE tg3 implementation
> > is very slow.
> >
> > It takes me about 30 seconds to fetch my vmlinuz kernel image from
> > Ubuntu 10.10 on a 1Gbps connection compared to gPXE (1.0.1)'s
> > implementation that takes about 1 second.
> >
> > It prints out a bunch of hashes and sometimes a dot ################...
> > while gPXE doesn't.
> >
> > I wonder if that's a regression or something.
> >
> > I can help with debugging the problem if that's a regression as I have
> > the hardware here, but if that's something that the devs already know,
> > then there's no sense in doing it.
> 
> I also noticed this yesterday, as well as some "transmit timed out"
> errors. Have there been any recent changes that might be relevant?
> 
> Josh
> 
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>