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Subject: Re: rdtsc to mili secs?
To: andrea@suse.de (Andrea Arcangeli)
Date: Mon, 6 Nov 2000 00:28:00 +0000 (GMT)
Cc: sushil@veritas.com (Sushil Agarwal), linux-kernel@vger.kernel.org
In-Reply-To: <20001106011000.A9787@athlon.random> from "Andrea Arcangeli" at Nov 06, 2000 01:10:00 AM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> On Mon, Nov 06, 2000 at 04:39:23AM +0530, Sushil Agarwal wrote:
> > Hi,
> >     According to the Intel Arch. Instruction set reference the
> > resolution of the "rdtsc" instruction is a clock cycle. How
> > do I convert this to mili seconds? 
> 
> fast_gettimeoffset_quotient, see do_fast_gettimeoffset().

Also remember that the TSC may not be available due to the chip era, chip bugs
or running SMP with non matched CPU clocks.

Alan

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