From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 31 Jan 2001 02:59:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 31 Jan 2001 02:59:47 -0500 Received: from mailgw.prontomail.com ([216.163.180.10]:46093 "EHLO c0mailgw04.prontomail.com") by vger.kernel.org with ESMTP id ; Wed, 31 Jan 2001 02:59:38 -0500 Message-ID: <3A77C502.4010504@mvista.com> Date: Tue, 30 Jan 2001 23:55:46 -0800 From: george anzinger Reply-To: george@mvista.com Organization: MontaVista Software User-Agent: Mozilla/5.0 (X11; U; Linux 2.2.12-20b i686; en-US; m18) Gecko/20001107 Netscape6/6.0 X-Accept-Language: en MIME-Version: 1.0 To: Joe deBlaquiere CC: David Woodhouse , yodaiken@fsmlabs.com, Andrew Morton , Nigel Gamble , linux-kernel@vger.kernel.org, linux-audio-dev@ginette.musique.umontreal.ca Subject: Re: [linux-audio-dev] low-latency scheduling patch for 2.4.0 In-Reply-To: <3A75A70C.4050205@redhat.com> <200101220150.UAA29623@renoir.op.net> , ; <20010128061428.A21416@hq.fsmlabs.com> <3A742A79.6AF39EEE@uow.edu.au> <3A74462A.80804@redhat.com> <20010129084410.B32652@hq.fsmlabs.com> <30672.980867280@redhat.com> <3A76E155.2030905@redhat.com> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Joe deBlaquiere wrote: ~snip~ > The locical answer is run with HZ=10000 so you get 100us intervals, > right ;o). Lets not assume we need the overhead of HZ=10000 to get 100us alarm/timer resolution. How about a timer that ticks when we need the next tick... On systems with multiple hardware timers you could kick off a > single event at 200us, couldn't you? I've done that before with the > extra timer assigned exclusively to a resource. With the right hardware resource, one high res counter can give you all the various tick resolutions you need. BTDT on HPRT. George It's not a giant time > slice, but at least you feel like you're allowing something to happen, > right? > >> >> -- >> dwmw2 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/