Re: dynticks + iptables almost stops the boot process [was: Re: 2.6.20-rc6-mm3]

2007-02-07 Thread Ingo Molnar
* Andrew Morton <[EMAIL PROTECTED]> wrote: > On Wed, 07 Feb 2007 00:17:33 +0100 > Thomas Gleixner <[EMAIL PROTECTED]> wrote: > > > On Wed, 2007-02-07 at 00:12 +0100, Tilman Schmidt wrote: > > > > No, not this. Anyway the last patch Thomas forwarded does fix the > > > > problem. > > > > > > Whic

Re: dynticks + iptables almost stops the boot process [was: Re: 2.6.20-rc6-mm3]

2007-02-06 Thread Andrew Morton
On Wed, 07 Feb 2007 00:17:33 +0100 Thomas Gleixner <[EMAIL PROTECTED]> wrote: > On Wed, 2007-02-07 at 00:12 +0100, Tilman Schmidt wrote: > > > No, not this. Anyway the last patch Thomas forwarded does fix the > > > problem. > > > > Which one would that be? I might try it for comparison. > > Find

Re: dynticks + iptables almost stops the boot process [was: Re: 2.6.20-rc6-mm3]

2007-02-06 Thread Thomas Gleixner
On Wed, 2007-02-07 at 00:12 +0100, Tilman Schmidt wrote: > > No, not this. Anyway the last patch Thomas forwarded does fix the > > problem. > > Which one would that be? I might try it for comparison. Find the combined patch of all fixlets on top of -mm3 below. tglx Index: linux-2.6.20/k

Re: dynticks + iptables almost stops the boot process [was: Re: 2.6.20-rc6-mm3]

2007-02-06 Thread Tilman Schmidt
Am 06.02.2007 20:28 schrieb Mattia Dongili: > On Tue, Feb 06, 2007 at 05:48:26PM +0100, Ingo Molnar wrote: >> Could you try the patch below? The RCU serialization code (a rare call >> but can be common in some types of setups) has a nasty implicit >> dependency on the HZ tick - which until now wa

Re: dynticks + iptables almost stops the boot process [was: Re: 2.6.20-rc6-mm3]

2007-02-06 Thread Mattia Dongili
On Tue, Feb 06, 2007 at 05:48:26PM +0100, Ingo Molnar wrote: > > Mattia, > > * Mattia Dongili <[EMAIL PROTECTED]> wrote: > > > > I have it halfways reproducible now and I'm working to find the root > > > cause. Thanks for providing the info. > > > > Great, I'm obviously available to test any p

Re: dynticks + iptables almost stops the boot process [was: Re: 2.6.20-rc6-mm3]

2007-02-06 Thread Ingo Molnar
Mattia, * Mattia Dongili <[EMAIL PROTECTED]> wrote: > > I have it halfways reproducible now and I'm working to find the root > > cause. Thanks for providing the info. > > Great, I'm obviously available to test any patch :) Could you try the patch below? The RCU serialization code (a rare call

Re: dynticks + iptables almost stops the boot process [was: Re: 2.6.20-rc6-mm3]

2007-02-02 Thread Mattia Dongili
On Fri, Feb 02, 2007 at 09:27:14PM +0100, Thomas Gleixner wrote: > On Fri, 2007-02-02 at 20:18 +0100, Mattia Dongili wrote: > > > May I ask you for another test ? Please turn on high resolution timers > > > and check, if the same strange behaviour is happening. > > > > Yep, here we go again. Still

Re: dynticks + iptables almost stops the boot process [was: Re: 2.6.20-rc6-mm3]

2007-02-02 Thread Thomas Gleixner
On Fri, 2007-02-02 at 20:18 +0100, Mattia Dongili wrote: > > May I ask you for another test ? Please turn on high resolution timers > > and check, if the same strange behaviour is happening. > > Yep, here we go again. Still seeing long stalls but no negative expires > offset. > Actually one more t

dynticks + iptables almost stops the boot process [was: Re: 2.6.20-rc6-mm3]

2007-02-02 Thread Mattia Dongili
Cc-ing netdev and netfilter-devel, the beginning of the thread is here http://lkml.org/lkml/2007/1/31/306 On Thu, Feb 01, 2007 at 11:33:22PM +0100, Thomas Gleixner wrote: > Mattia, ... > May I ask you for another test ? Please turn on high resolution timers > and check, if the same strange behavio