From: Thomas Gleixner <tglx@linutronix.de>
To: Maximilian Engelhardt <maxi@daemonizer.de>
Cc: Michael Buesch <mb@bu3sch.de>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-wireless <linux-wireless@vger.kernel.org>,
Stephen Hemminger <shemminger@linux-foundation.org>,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
Jeff Garzik <jgarzik@pobox.com>,
Gary Zambrano <zambrano@broadcom.com>,
netdev@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>
Subject: Re: b44: regression in 2.6.22 (resend)
Date: Mon, 04 Jun 2007 08:39:48 +0200 [thread overview]
Message-ID: <1180939188.4404.5.camel@chaos> (raw)
In-Reply-To: <200706031826.06891.maxi@daemonizer.de>
On Sun, 2007-06-03 at 18:26 +0200, Maximilian Engelhardt wrote:
> > Is there any other strange behavior of the high res enabled kernel than
> > the b44 problem ?
>
> I didn't notice anything in the past (as I wrote). But today I did some tests
> for an updated version of the p54 mac80211 wlan driver and I noticed exactly
> the same problem:
>
> when booting with highres=off everything is fine.
> But when I boot an highres enabled kernel and I do the iperf-test with the p54
> driver, my systems becomes unresponsive during the test. It seems to be
> exactly the same problem I have with the b44 driver.
> So this might not be a bug in the b44 code but a bug somewhere in the linux
> networking code.
>
> I did the test with an 2.6.22-rc3-git4 kernel and the p54 driver built
> external as module.
Can you look at iperf to figure out, whether it does some weird timer
stuff (high frequency interval timer or such) ? Either check the code or
strace it.
tglx
WARNING: multiple messages have this Message-ID (diff)
From: Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
To: Maximilian Engelhardt <maxi-OwNUvPV92VfddJNmlsFzeA@public.gmane.org>
Cc: Michael Buesch <mb-fseUSCV1ubazQB+pC5nmwQ@public.gmane.org>,
linux-kernel
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
linux-wireless
<linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Stephen Hemminger
<shemminger-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Arnaldo Carvalho de Melo
<acme-f8uhVLnGfZaxAyOMLChx1axOck334EZe@public.gmane.org>,
Jeff Garzik <jgarzik-e+AXbWqSrlAAvxtiuMwx3w@public.gmane.org>,
Gary Zambrano <zambrano-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Subject: Re: b44: regression in 2.6.22 (resend)
Date: Mon, 04 Jun 2007 08:39:48 +0200 [thread overview]
Message-ID: <1180939188.4404.5.camel@chaos> (raw)
In-Reply-To: <200706031826.06891.maxi-OwNUvPV92VfddJNmlsFzeA@public.gmane.org>
On Sun, 2007-06-03 at 18:26 +0200, Maximilian Engelhardt wrote:
> > Is there any other strange behavior of the high res enabled kernel than
> > the b44 problem ?
>
> I didn't notice anything in the past (as I wrote). But today I did some tests
> for an updated version of the p54 mac80211 wlan driver and I noticed exactly
> the same problem:
>
> when booting with highres=off everything is fine.
> But when I boot an highres enabled kernel and I do the iperf-test with the p54
> driver, my systems becomes unresponsive during the test. It seems to be
> exactly the same problem I have with the b44 driver.
> So this might not be a bug in the b44 code but a bug somewhere in the linux
> networking code.
>
> I did the test with an 2.6.22-rc3-git4 kernel and the p54 driver built
> external as module.
Can you look at iperf to figure out, whether it does some weird timer
stuff (high frequency interval timer or such) ? Either check the code or
strace it.
tglx
next prev parent reply other threads:[~2007-06-04 6:39 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-26 0:24 b44: regression in 2.6.22 Stephen Hemminger
2007-05-26 3:51 ` Gary Zambrano
2007-05-26 17:01 ` Michael Buesch
2007-05-27 19:25 ` b44: regression in 2.6.22 (resend) Maximilian Engelhardt
2007-05-27 19:25 ` Maximilian Engelhardt
2007-05-27 19:45 ` Michael Buesch
2007-05-27 19:45 ` Michael Buesch
2007-05-27 20:36 ` Maximilian Engelhardt
2007-05-27 20:36 ` Maximilian Engelhardt
2007-05-27 20:46 ` Michael Buesch
2007-05-27 20:46 ` Michael Buesch
2007-05-27 21:46 ` Maximilian Engelhardt
2007-05-27 21:46 ` Maximilian Engelhardt
2007-05-27 21:13 ` Michael Buesch
2007-05-27 21:13 ` Michael Buesch
2007-05-27 21:16 ` Michael Buesch
2007-05-27 21:50 ` Maximilian Engelhardt
2007-05-27 21:50 ` Maximilian Engelhardt
2007-05-27 22:15 ` Maximilian Engelhardt
2007-05-27 22:15 ` Maximilian Engelhardt
2007-05-28 0:24 ` Michael Buesch
2007-05-28 0:40 ` Maximilian Engelhardt
2007-05-28 0:40 ` Maximilian Engelhardt
2007-05-28 10:16 ` Michael Buesch
2007-05-28 10:16 ` Michael Buesch
2007-05-28 14:09 ` Maximilian Engelhardt
2007-05-28 14:09 ` Maximilian Engelhardt
2007-05-28 15:14 ` Michael Buesch
2007-05-28 15:14 ` Michael Buesch
2007-05-28 15:32 ` Thomas Gleixner
2007-05-28 15:32 ` Thomas Gleixner
2007-05-28 15:43 ` Michael Buesch
2007-05-28 15:43 ` Michael Buesch
2007-05-28 17:44 ` Maximilian Engelhardt
2007-05-28 19:23 ` Thomas Gleixner
2007-05-28 20:55 ` Maximilian Engelhardt
2007-05-28 21:45 ` Thomas Gleixner
2007-05-29 18:28 ` Maximilian Engelhardt
2007-05-29 18:28 ` Maximilian Engelhardt
2007-05-29 13:58 ` Gary Zambrano
2007-05-29 13:58 ` Gary Zambrano
2007-05-29 17:23 ` Maximilian Engelhardt
2007-05-29 17:23 ` Maximilian Engelhardt
2007-06-03 16:26 ` Maximilian Engelhardt
2007-06-04 6:39 ` Thomas Gleixner [this message]
2007-06-04 6:39 ` Thomas Gleixner
2007-06-04 16:09 ` Stephen Hemminger
2007-06-04 16:09 ` Stephen Hemminger
2007-06-04 16:35 ` Thomas Gleixner
2007-06-04 16:35 ` Thomas Gleixner
2007-06-04 16:59 ` iperf: performance regression (was b44 driver problem?) Stephen Hemminger
2007-06-04 17:32 ` Thomas Gleixner
2007-06-04 17:32 ` Thomas Gleixner
2007-06-04 17:51 ` Stephen Hemminger
2007-06-04 19:00 ` Thomas Gleixner
2007-06-04 19:26 ` Thomas Gleixner
2007-06-04 19:26 ` Thomas Gleixner
2007-06-04 19:32 ` Ingo Molnar
2007-06-04 19:47 ` Maximilian Engelhardt
2007-06-04 20:02 ` Stephen Hemminger
2007-06-04 20:52 ` Maximilian Engelhardt
2007-06-04 20:52 ` Maximilian Engelhardt
2007-05-28 10:49 ` b44: regression in 2.6.22 (resend) Michael Buesch
2007-05-28 14:12 ` Maximilian Engelhardt
2007-05-28 14:12 ` Maximilian Engelhardt
2007-05-28 14:55 ` Michael Buesch
2007-05-29 14:14 ` Gary Zambrano
2007-05-29 20:45 ` Michael Buesch
2007-05-29 20:45 ` Michael Buesch
2007-05-29 21:01 ` Stephen Hemminger
2007-05-29 21:01 ` Stephen Hemminger
2007-05-29 21:05 ` Gary Zambrano
2007-05-29 21:05 ` Gary Zambrano
2007-05-29 22:39 ` Jeff Garzik
2007-05-29 22:39 ` Jeff Garzik
2007-05-29 21:36 ` Gary Zambrano
2007-05-29 21:36 ` Gary Zambrano
2007-05-30 10:45 ` Michael Buesch
-- strict thread matches above, loose matches on Subject: below --
2007-05-28 23:00 Uwe Bugla
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