From: Jun Sun <jsun@mvista.com>
To: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org, jsun@mvista.com
Subject: Re: [RFC] synchronized CPU count registers on SMP machines
Date: Wed, 4 Jun 2003 16:46:52 -0700 [thread overview]
Message-ID: <20030604164652.J19122@mvista.com> (raw)
In-Reply-To: <20030604231547.GA22410@linux-mips.org>; from ralf@linux-mips.org on Thu, Jun 05, 2003 at 01:15:47AM +0200
On Thu, Jun 05, 2003 at 01:15:47AM +0200, Ralf Baechle wrote:
> On Wed, Jun 04, 2003 at 03:39:30PM -0700, Jun Sun wrote:
>
> > 1) clocks on different CPUs don't have the same frequency
> > 2) clocks on different CPUs drift to each other
> > 2) some fancy power saving feature such as frequency scaling
> >
> > But I think for a foreseeable future most MIPS SMP machines
> > don't have the above issues (true?). And it is probably worthwile
> > to synchronize count registers for them.
>
> 1) and 2) affect most SGI systems.
>
Assuming SGI systems represent the past of MIPS, we are still ok
future-wise. :)
Jun
next prev parent reply other threads:[~2003-06-04 23:46 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-04 22:39 [RFC] synchronized CPU count registers on SMP machines Jun Sun
2003-06-04 22:51 ` Michael Uhler
2003-06-04 22:51 ` Michael Uhler
2003-06-04 23:44 ` Jun Sun
2003-06-04 23:15 ` Ralf Baechle
2003-06-04 23:46 ` Jun Sun [this message]
2003-06-05 0:12 ` Ralf Baechle
2003-06-05 1:38 ` Jun Sun
2003-06-05 8:09 ` Dominic Sweetman
2003-06-05 8:48 ` Ralf Baechle
2003-06-05 16:53 ` Jun Sun
2003-06-05 20:06 ` Greg Lindahl
2003-06-05 10:45 ` Alan Cox
2003-06-05 8:55 ` Kevin D. Kissell
2003-06-05 8:55 ` Kevin D. Kissell
2003-06-05 8:51 ` Ralf Baechle
2003-06-05 11:08 ` Maciej W. Rozycki
2003-06-05 0:18 ` Keith Owens
[not found] <ralf@linux-mips.org>
2003-06-05 9:23 ` Tor Arntsen
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