linux-kernel - Re: b44: regression in 2.6.22 (resend)

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Message-Id: <200705272350.45843.maxi@daemonizer.de>
Date:	Sun, 27 May 2007 23:50:42 +0200
From:	Maximilian Engelhardt <maxi@...monizer.de>
To:	Michael Buesch <mb@...sch.de>
Cc:	"linux-kernel" <linux-kernel@...r.kernel.org>,
	"linux-wireless" <linux-wireless@...r.kernel.org>,
	Stephen Hemminger <shemminger@...ux-foundation.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Jeff Garzik <jgarzik@...ox.com>,
	Gary Zambrano <zambrano@...adcom.com>, netdev@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: b44: regression in 2.6.22 (resend)

On Sunday 27 May 2007, Michael Buesch wrote:
> On Sunday 27 May 2007 23:13:32 Michael Buesch wrote:
> > On Sunday 27 May 2007 21:25:17 Maximilian Engelhardt wrote:
> > > 2.6.21.1:
> > > [  5] local 192.168.1.2 port 58414 connected with 192.168.1.1 port 5001
> > > [  5]  0.0-60.6 sec  1.13 MBytes    157 Kbits/sec
> > > [  4] local 192.168.1.2 port 5001 connected with 192.168.1.1 port 57837
> > > [  4]  0.0-63.1 sec  2.82 MBytes    375 Kbits/sec
> > >
> > > 2.6.22-rc3:
> > > [  5] local 192.168.1.2 port 46557 connected with 192.168.1.1 port 5001
> > > [  5]  0.0-60.4 sec  58.9 MBytes  8.18 Mbits/sec
> > > [  4] local 192.168.1.2 port 5001 connected with 192.168.1.1 port 51633
> > > [  4]  0.0-63.1 sec  7.27 MBytes    967 Kbits/sec
> >
> > This is the diff between these two kernels.
> > I'm not sure why you see a much better TX throughput here.
> >
> > Can you re-check to make sure it's not just some test-jitter?
>
> Oh, eh, and what I forgot to ask:
> Do you know an old kernel that works perfectly well for you,
> so I can look at a diff between this one and anything >=2.6.21.1.

I don't know any, most older kernels did work fine for me, but I never user 
iperf there so I guess if the bug is there also I simply didn't trigger it.
If you think it's usefull I could go back and try different kernels, but that 
would take some time.
Except the iperf bug 2.6.21.1 and 2.6.22-rc3 work fine.

Maxi

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