From owner-freebsd-current Wed Sep 24 22:54:23 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id WAA27460 for current-outgoing; Wed, 24 Sep 1997 22:54:23 -0700 (PDT) Received: from pluto.plutotech.com (root@mail.plutotech.com [206.168.67.137]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id WAA27452 for ; Wed, 24 Sep 1997 22:54:20 -0700 (PDT) Received: from narnia.plutotech.com (narnia.plutotech.com [206.168.67.130]) by pluto.plutotech.com (8.8.5/8.8.5) with ESMTP id XAA20672; Wed, 24 Sep 1997 23:54:15 -0600 (MDT) Message-Id: <199709250554.XAA20672@pluto.plutotech.com> To: Finn Arne Gangstad cc: "Justin T. Gibbs" , Archie Cobbs , current@FreeBSD.ORG Subject: Re: timeout management (was: Re: cvs commit: ...) In-reply-to: Your message of "Thu, 25 Sep 1997 07:47:14 +0200." Date: Wed, 24 Sep 1997 23:54:02 -0600 From: "Justin T. Gibbs" Sender: owner-freebsd-current@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk >There was a lot of discussion on the kernel list about cascace_timers >enabling timers now and then, in practice cascade_timers never move many >timers so it's not really a problem, even less of a problem when it just >grabs the timer lock. > >- Finn Arne If the granularity of the timer interval is large when compared to the speed with which a given application generates timers for the same interval, you could have a problem. If you want to do RT, I think you have to enable timers periodically, or you may miss a deadline. -- Justin T. Gibbs =========================================== FreeBSD: Turning PCs into workstations ===========================================