From owner-freebsd-hackers Wed Aug 19 03:55:27 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id DAA22695 for freebsd-hackers-outgoing; Wed, 19 Aug 1998 03:55:27 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from verdi.nethelp.no (verdi.nethelp.no [158.36.41.162]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id DAA22690 for ; Wed, 19 Aug 1998 03:55:26 -0700 (PDT) (envelope-from sthaug@nethelp.no) From: sthaug@nethelp.no Received: (qmail 24720 invoked by uid 1001); 19 Aug 1998 10:54:48 +0000 (GMT) To: wosch@cs.tu-berlin.de Cc: tlambert@primenet.com, marcs@znep.com, hackers@FreeBSD.ORG Subject: Re: sendfile() API? In-Reply-To: Your message of "Wed, 19 Aug 1998 11:18:09 +0200" References: <19980819111809.A22887@caramba.cs.tu-berlin.de> X-Mailer: Mew version 1.05+ on Emacs 19.34.2 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Date: Wed, 19 Aug 1998 12:54:47 +0200 Message-ID: <24718.903524087@verdi.nethelp.no> Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > Who cares about data copy overhead? If the kernel spend 5% of the CPU > time in copying, there are still 95% free CPU cycles. Quite a few people care about copy overhead, actually. Read Larry McVoy's splice paper to see why: http://www.bitmover.com/lm/papers/splice.ps.gz Steinar Haug, Nethelp consulting, sthaug@nethelp.no To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message