From owner-freebsd-hackers Wed Apr 18 10:27:26 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from filk.iinet.net.au (syncopation-dns.iinet.net.au [203.59.24.29]) by hub.freebsd.org (Postfix) with SMTP id 891B637B423 for ; Wed, 18 Apr 2001 10:27:23 -0700 (PDT) (envelope-from julian@elischer.org) Received: (qmail 4084 invoked by uid 666); 18 Apr 2001 17:30:11 -0000 Received: from i192-224.nv.iinet.net.au (HELO elischer.org) (203.59.192.224) by mail.m.iinet.net.au with SMTP; 18 Apr 2001 17:30:11 -0000 Message-ID: <3ADDCE50.132B9F5D@elischer.org> Date: Wed, 18 Apr 2001 10:26:40 -0700 From: Julian Elischer X-Mailer: Mozilla 4.7 [en] (X11; U; FreeBSD 5.0-CURRENT i386) X-Accept-Language: en, hu MIME-Version: 1.0 To: Robert Watson Cc: Poul-Henning Kamp , Kirk McKusick , Rik van Riel , freebsd-hackers@FreeBSD.ORG, Matt Dillon , David Xu Subject: Re: vm balance References: Content-Type: text/plain; charset=iso-8859-2 Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Robert Watson wrote: > > On Wed, 18 Apr 2001, Poul-Henning Kamp wrote: > As I indicated in my follow-up mail, the statement about seeking was > incorrect, that is a property of the open file structure; I believe the > remainder still holds true. When was the last time you tried mmap'ing or > seeking on the socket? A socket represents a buffered data stream which > does not allow arbitrary read/write operations at arbitrary offsets. Actually there have been times when I did want to mmap a datastream.. I think a datastream mapped into a user buffer-space is one of the possible 0-copy methods people sometimes mention. -- __--_|\ Julian Elischer / \ julian@elischer.org ( OZ ) World tour 2000-2001 ---> X_.---._/ v To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message