Re: 2.6.25.2 - Jiffies/Time jumping back and forth (Regereesion from 2.6.24)

Martin Knoblauch
2008-05-07T15:02:37Z

> From: Bart Van Assche <bart.vanassche@gmail.com>
> To: Martin Knoblauch <spamtrap@knobisoft.de>
> Cc: linux-kernel@vger.kernel.org; hmh@hmh.eng.br
> Sent: Wednesday, May 7, 2008 3:06:02 PM
> Subject: Re: 2.6.25.2 - Jiffies/Time jumping back and forth (Regereesion from 2.6.24)
>
> On Wed, May 7, 2008 at 2:42 PM, Martin Knoblauch wrote:
> >
> > any news on the one below? I upgraded to 2.6.25.2 and the problem still
> persists. Would adding a bugzilla actually help ? :-)
> >
> > http://www.ussg.iu.edu/hypermail/linux/kernel/0804.2/1144.html
>
> I noticed a similar issue on 2.6.22 and 2.6.24 kernels: with ACPI
> disabled Linux' clock jumps backward and forward early during boot.
> See also the kernel messages from the attachment in comment #13 of
> http://bugzilla.kernel.org/show_bug.cgi?id=9936.
>
> Bart,

Hi Bart,

no this looks different. As soon as the timesource is detected, I see non-zero timestamps
in dmesg, but they look smaller and jump in both directions. And I have never seen this before
2.6.25.

It actually might be a good idea to get the dmesg output from 2.6.24.

Cheers
Martin