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Subject: Re: [PATCH 1/6] new timeofday core subsystem for -mm (v.B3)
From: Lee Revell <rlrevell@joe-job.com>
To: Roman Zippel <zippel@linux-m68k.org>
Cc: john stultz <johnstul@us.ibm.com>, lkml <linux-kernel@vger.kernel.org>,
       Andrew Morton <akpm@osdl.org>, George Anzinger <george@mvista.com>,
       Ulrich Windl <ulrich.windl@rz.uni-regensburg.de>
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Date: Mon, 20 Jun 2005 19:40:46 -0400
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On Tue, 2005-06-21 at 00:05 +0200, Roman Zippel wrote:
> With -mm you can now choose the HZ value, so that's not really the 
> problem anymore. A lot of archs even never changed to a higher HZ
> value. 

That does not solve anything, going back to HZ=100 is a big user-visible
regression because the resolution of sleep() (and poll, etc) is now 10ms
rather than 1ms.  Many apps have RT constraints between 1ms and 10ms.

Lee