From owner-freebsd-hackers Fri Sep 28 12:11:32 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from critter.freebsd.dk (critter.freebsd.dk [212.242.86.163]) by hub.freebsd.org (Postfix) with ESMTP id 0774C37B403 for ; Fri, 28 Sep 2001 12:11:29 -0700 (PDT) Received: from critter (localhost [127.0.0.1]) by critter.freebsd.dk (8.11.4/8.11.4) with ESMTP id f8SJB5v77781; Fri, 28 Sep 2001 21:11:05 +0200 (CEST) (envelope-from phk@critter.freebsd.dk) To: Andrew Gallatin Cc: "Louis A. Mamakos" , hackers@FreeBSD.ORG Subject: Re: timestamp offload [was Re: TCP&IP cksum offload on FreeBSD 4.2] In-Reply-To: Your message of "Fri, 28 Sep 2001 14:47:24 EDT." <15284.50620.103948.237567@grasshopper.cs.duke.edu> Date: Fri, 28 Sep 2001 21:11:05 +0200 Message-ID: <77779.1001704265@critter> From: Poul-Henning Kamp Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In message <15284.50620.103948.237567@grasshopper.cs.duke.edu>, Andrew Gallatin writes: > >Louis A. Mamakos writes: > > > > Some work I did a year or so ago measured the interrupt response time > > latency, and it was pretty impressive at how large and variable it > > could be. > > > > louie > >Yes. Me too, but with a pamette, not a nic. The "HotWorks" from www.vcc.com can do the same, a lot cheaper and it has a FreeBSD driver: sys/pci/xrpu.c -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message