Date: Wed, 17 Nov 2004 17:03:02 -0500 (EST) From: Andrew Gallatin <gallatin@cs.duke.edu> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: arch@freebsd.org Subject: Re: HEADSUP: HZ=1000 by default on i386 Message-ID: <16795.51862.698490.378530@grasshopper.cs.duke.edu> In-Reply-To: <39210.1099557885@critter.freebsd.dk> References: <39210.1099557885@critter.freebsd.dk>
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Poul-Henning Kamp writes: > > We increasingly need better granularity in our sleep/wakeup calls and > things like device polling and trafic shaping needs higher granularity > in particular. > Have you (or anybody else) looked at what dragonfly has done with tvtohz() and clock aliasing? The results presented at http://www.dragonflybsd.org/docs/nanosleep look very promising. But I've never thought very hard about timers, and I'm not sure I understand what they are doing. Drew
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