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. Which one would that be? I

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 but

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 patch :) Could

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 was a

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:

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 the combined

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 behaviour

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 test I

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 seeing