Date: Thu, 25 Sep 1997 07:47:25 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: gibbs@plutotech.com (Justin T. Gibbs) Cc: finnag@guardian.no, archie@whistle.com, current@FreeBSD.ORG Subject: Re: timeout management (was: Re: cvs commit: ...) Message-ID: <199709250747.AAA10520@usr03.primenet.com> In-Reply-To: <199709250512.XAA19962@pluto.plutotech.com> from "Justin T. Gibbs" at Sep 24, 97 11:11:58 pm
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> >Have you guys looked at the timer code in Linux? It basically is a small > >variation of this, which makes all operations O(1) for almost > >every timer. > > It looks like a 5 level hierarchical timing wheel to me. FreeBSD currently > has a one level timing wheel. Cascade_timers should enable interrupts > at deterministic intervals so that interrupts are defered a deterministic > amount of time. I agree with Justin on this. The Linux code is insufficient, in this case. BTW, it's linux/kernel/sched.c, not just kernel/sched.c. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
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