From owner-freebsd-hackers Thu Jul 2 08:48:58 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id IAA14187 for freebsd-hackers-outgoing; Thu, 2 Jul 1998 08:48:58 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from labinfo.iet.unipi.it (labinfo.iet.unipi.it [131.114.9.5]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id IAA14123 for ; Thu, 2 Jul 1998 08:48:30 -0700 (PDT) (envelope-from luigi@labinfo.iet.unipi.it) Received: from localhost (luigi@localhost) by labinfo.iet.unipi.it (8.6.5/8.6.5) id QAA12618; Thu, 2 Jul 1998 16:18:35 +0200 From: Luigi Rizzo Message-Id: <199807021418.QAA12618@labinfo.iet.unipi.it> Subject: Re: timeout granularity (was: Re: Console driver...) To: rminnich@Sarnoff.COM (Ron G. Minnich) Date: Thu, 2 Jul 1998 16:18:34 +0200 (MET DST) Cc: hackers@FreeBSD.ORG In-Reply-To: from "Ron G. Minnich" at Jul 2, 98 09:16:59 am X-Mailer: ELM [version 2.4 PL23] Content-Type: text Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > On Thu, 2 Jul 1998, Luigi Rizzo wrote: > > polling if the test is successful. Sooner or later hopefully we > > will move to large values of HZ anyways. > > good point. I've experimented with HZ of 10,000 on a 486-25. 10K was a > bit large for this machine, but 2500 was no problem. What's the largest > HZ anyone out there has used? I'd expect that 10K or 20K would not be a > real problem. Anyone know? > > ron > p.s. no, time did not run fast. I put pre-scaling in hardclock so all was > well. do you have a patch for the above ? I think most things work fine with HZ>100 but i have heard that NTP has problems with it. (i like to use higher values of HZ for many applications) cheers luigi -----------------------------+-------------------------------------- Luigi Rizzo | Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it | Universita' di Pisa tel: +39-50-568533 | via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 | http://www.iet.unipi.it/~luigi/ _____________________________|______________________________________ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message