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Message-ID: <9a87484905071418404a088ae2@mail.gmail.com>
Date: Fri, 15 Jul 2005 03:40:03 +0200
From: Jesper Juhl <jesper.juhl@gmail.com>
Reply-To: Jesper Juhl <jesper.juhl@gmail.com>
To: Linus Torvalds <torvalds@osdl.org>
Subject: Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt
Cc: Lee Revell <rlrevell@joe-job.com>, Chris Wedgwood <cw@f00f.org>,
       Andrew Morton <akpm@osdl.org>, "Brown, Len" <len.brown@intel.com>,
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       davidsen@tmr.com, kernel@kolivas.org, linux-kernel@vger.kernel.org,
       mbligh@mbligh.org, diegocg@gmail.com, azarah@nosferatu.za.org,
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On 7/15/05, Linus Torvalds <torvalds@osdl.org> wrote:
> 
> 
> On Thu, 14 Jul 2005, Lee Revell wrote:
> >
> > I don't think this will fly because we take a big performance hit by
> > calculating HZ at runtime.
> 
> I think it might be an acceptable solution for a distribution that really
> needed it, since it should be fairly simple. However, it's definitely not
> the right solution.
> 
> HOWEVER. I bet that somebody who really really cares (hint hint) could
> easily make HZ be 1000, and then dynamically tweak the divisor at bootup
> to be either 1000, 250, or 100, and then increment "jiffies" by 1, 4 or
> 10.
> 
[...]
> 
> Really. I dare you guys. First one to send me a tested patch gets a gold
> star.
> 

Testing a patch right now, I'll send it to you as soon as it doesn't
blow up on boot (which it currently does).

-- 
Jesper Juhl <jesper.juhl@gmail.com>
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