Re: Ottawa Linux Power Management Summit, June 25-26, 2007 - Minutes

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On Monday, 24 September 2007 21:41, Dave Jones wrote:
> On Sun, Sep 09, 2007 at 02:26:39PM +0200, Rafael J. Wysocki wrote:
> 
>  > > Dave mentioned that Fedora Core 7 32-bit is now shipping with
>  > > CONFIG_NOHZ=y and CONFIG_HZ=1000.
>  > 
>  > CONFIG_NOHZ is known to break suspend and resume on some machines.  These
>  > problems are being fixed over time, but that's a risky decision for a
>  > distribution to switch it on by default.
> 
> Expect to see everyone else doing the same thing in the next versions.
> Without field-testing this stuff it remains busted.  A lot of bugs got
> found and fixed by having this in Fedora that weren't tripped over
> by linux-kernel testers at all.

Well, that's certainly true.

Still, we have open suspend bugs in which NO_HZ appears to be the culprit,
eg. http://bugzilla.kernel.org/show_bug.cgi?id=8680

Greetings,
Rafael
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