From owner-freebsd-stable Thu Jul 11 21:57: 3 2002 Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0659A37B400 for ; Thu, 11 Jul 2002 21:57:00 -0700 (PDT) Received: from herbelot.dyndns.org (d108.dhcp212-198-26.noos.fr [212.198.26.108]) by mx1.FreeBSD.org (Postfix) with ESMTP id CC24843E09 for ; Thu, 11 Jul 2002 21:56:58 -0700 (PDT) (envelope-from thierry@herbelot.com) Received: from herbelot.com (tulipe.herbelot.nom [192.168.2.5]) by herbelot.dyndns.org (8.9.3/8.9.3) with ESMTP id GAA22479; Fri, 12 Jul 2002 06:56:47 +0200 (CEST) (envelope-from thierry@herbelot.com) Message-ID: <3D2E618F.DFA1AC18@herbelot.com> Date: Fri, 12 Jul 2002 06:56:47 +0200 From: Thierry Herbelot X-Mailer: Mozilla 4.79 [en] (X11; U; Linux 2.4.2 i386) X-Accept-Language: en MIME-Version: 1.0 To: David Schultz Cc: freebsd-stable@FreeBSD.ORG Subject: Re: tuning(7) request was: Re: Performance boost with kernel options in FBSD 4.6 References: <20020710104730.L10343-100000@klima.physik.uni-mainz.de> <04a601c228dc$c6dbb980$681663cf@icarz.com> <200207111930.g6BJUX5m096974@apollo.backplane.com> <3D2DF09C.B553DE07@herbelot.com> <20020711232540.GA1437@HAL9000.wox.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG David Schultz wrote: > > Sure modern processors can handle 5000 Hz at the expense of a few > CPU cycles, but do you actually find that dummynet isn't accurate > enough at 1000 Hz? for most applications, dummynet is perfect with its 1ms granularity there are other applications (typically packet blasters) which can use a better time accuracy (this is even better when the internal clocked is slaved to GPS with NTP : you can then have near perfect network transaction replay) TfH To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message