From: Mikael Pettersson <mikpe@csd.uu.se>
To: alan@lxorguk.ukuu.org.uk
Cc: linux-kernel@vger.kernel.org
Subject: Re: [RFC] must fix lists
Date: Mon, 27 Oct 2003 10:48:55 +0100 (MET) [thread overview]
Message-ID: <200310270948.h9R9mtl5003515@harpo.it.uu.se> (raw)
On Thu, 23 Oct 2003 22:11:35 +0100, Alan Cox wrote:
>On Mer, 2003-10-22 at 03:50, Albert Cahalan wrote:
>> The system in question would also lose time when
>> under heavy load. Note that HZ is now 1000 HZ.
>> If interrupts are kept off for too long or an
>> SMI grabs the CPU...
>
>With a lot of laptops this is a huge problem. Its one of the reasons Red
>Hat went back to 100Hz in the RH 2.4 tree. With many laptops your clock
>becomes junk at 1Khz. It will be interesting to see if the ACPI timers
>help but that wont solve things for older laptops.
Or for really old desktops. My 486 loses time at a rate of about
2 minutes per hour when running 2.5/2.6 and doing lots of disk I/O.
Changing HZ back to 100 solves that problem.
I think we need a CONFIG_HZ.
/Mikael
next reply other threads:[~2003-10-27 9:50 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-27 9:48 Mikael Pettersson [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-10-21 5:46 [RFC] must fix lists Nick Piggin
2003-10-21 9:36 ` Lars Marowsky-Bree
2003-10-22 0:40 ` Nick Piggin
2003-10-21 16:18 ` Randy.Dunlap
2003-10-22 2:50 ` Albert Cahalan
2003-10-23 21:11 ` Alan Cox
2003-10-23 21:09 ` Alan Cox
2003-10-23 23:46 ` Nick Piggin
2003-10-24 1:06 ` Albert Cahalan
2003-10-24 1:55 ` viro
2003-10-24 0:23 ` Chris Wright
2003-10-25 20:18 ` Alan Cox
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