Subject: Re: Time travel..
From: Adam Goode (adam@evdebs.org)
Date: Thu Sep 20 2001 - 10:50:13 MDT
While you're at it... :)
There still exists the problem on some OldWorld machines (like the Power Mac
8500) where the Mac clock ticks ~9 times slower than it should. This
manifests itself through extremely slow window rectangles and really slow
clock ticks.
Is there any way to resolve this? I do get this error:
Property 'cpu/bus-frequency' is missing!
Which looks suspicious. And yes, on the 8500, this is missing.
The 8500 does have these properties though:
clock-frequency
PowerPC,604@0/clock-frequency
PowerPC,604@0/timebase-frequency
Does this help? I am willing to test it out.
Adam
On Wed, Sep 19, 2001 at 01:50:01PM +0200, samuel@ibrium.se wrote:
> On Wed, Sep 19, 2001 at 12:33:49AM -0700, Wilhelm *Rafial* Fitzpatrick wrote:
> > >Hmm.. I'm running the latest MOL on my PowerBook Pismo. I just noticed that
> > >when running the MacOS clock is running fast.
> > ...
> > >Anyone else having this problem? Any solutions?
> >
> > I haven't seen that, but your post caused me to examine the time in
> > MacOS versus Linux and I just realized that putting my laptop to
> > sleep apparently "stops the clock" in MacOS, but not in Linux.
> > MacOS under MOL apparently has no access to the system clock?
> > --
>
> MOL uses the CPU timebase register to measure time. This register
> does not tick when linux sleeps. A simple workaround would be
> detecting a sleep by checking the number of elapsed ticks against the
> gettimeofday() now and then issue a clock update when
> necessary.
>
> /Samuel
>
>
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