lkml.org 
[lkml]   [2000]   [Nov]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: rdtsc to mili secs?
Date
Followup to:  <20001116115730.A665@suse.cz>
By author: Vojtech Pavlik <vojtech@suse.cz>
In newsgroup: linux.dev.kernel
>
> Anyway, this should be solvable by checking for clock change in the
> timer interrupt. This way we should be able to detect when the clock
> went weird with a 10 ms accuracy. And compensate for that. It should be
> possible to keep a 'reasonable' clock running even through the clock
> changes, where reasonable means constantly growing and as close to real
> time as 10 ms difference max.
>

Actually, on machines where RDTSC works correctly, you'd like to use
that to detect a lost timer interrupt.

It's tough, it really is :(

-hpa
--
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:47    [W:0.110 / U:0.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site