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From: Segher Boessenkool <segher@kernel.crashing.org>
Date: Mon, 29 Aug 2005 17:31:20 +0200
To: Dan Malek <dan@embeddededge.com>
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Cc: Andrew Morton <akpm@osdl.org>, linuxppc-dev@ozlabs.org,
	Kumar Gala <galak@freescale.com>
Subject: Re: [PATCH] ppc32: add CONFIG_HZ
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>> While ppc32 has the CONFIG_HZ Kconfig option, it wasnt actually being
>> used. Connect it up and set all platforms to 250Hz.  This pretty much
>> mimics the ppc64 patch from Anton Blanchard.
>
> Why do we keep cranking up this clock frequency?  Do we really need
> it running that fast?  Is it time for someone with RTOS experience to
> implement a real scheduled clock queue in Linux instead of just
> wasting interrupts decrementing a counter waiting for the next
> event to expire?  :-)

Sure.  And some people are actually working on that.  But
on common x86 hardware, it seems to be a really really hard
thing to do.  Would be a lot easier in PowerPC of course...


Segher