Re: Missed jiffies

From: Pavel Machek (pavel@suse.cz)
Date: Tue Feb 19 2002 - 04:30:53 EST


Hi!

> > lap tops), is the fact that TSC is NOT clocked at a fixed rate. It is
> > affected by throttling (reduced in 12.5% increments) and by power
> > management.
>
> If the TSC is affected by HLT, throttling, or C2 power management, the
> TSC is broken (as it is on Cyrix chips, for example.) The TSC usually
> *is* affected by C3 power management, but the OS should be aware of
> C3.

Add thinkpad 560X (pentium/MMX) and toshiba 4030cdt (celeron) to your
blacklist, then. I believe that by your definition *many* sstems are
broken.
                                                                Pavel

-- 
Philips Velo 1: 1"x4"x8", 300gram, 60, 12MB, 40bogomips, linux, mutt,
details at http://atrey.karlin.mff.cuni.cz/~pavel/velo/index.html.

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