From owner-freebsd-current Tue Aug 25 19:25:26 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id TAA24630 for freebsd-current-outgoing; Tue, 25 Aug 1998 19:25:26 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from echonyc.com (echonyc.com [198.67.15.2]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id TAA24610; Tue, 25 Aug 1998 19:25:10 -0700 (PDT) (envelope-from benedict@echonyc.com) Received: from localhost (benedict@localhost) by echonyc.com (8.8.7/8.8.7) with SMTP id WAA20583; Tue, 25 Aug 1998 22:23:48 -0400 (EDT) Date: Tue, 25 Aug 1998 22:23:47 -0400 (EDT) From: Snob Art Genre Reply-To: ben@rosengart.com To: Terry Lambert cc: Mike Smith , michaelh@cet.co.jp, gpalmer@FreeBSD.ORG, chuckr@glue.umd.edu, freebsd-current@FreeBSD.ORG Subject: Re: Threads across processors In-Reply-To: <199808260155.SAA00915@usr04.primenet.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Wed, 26 Aug 1998, Terry Lambert wrote: > A dirty little secret is that SYSV SHM in FreeBSD is much faster > than mmap, because pages backed by anonymous pages instead of a > vnode pager object do not have to be written through... What about this? From mmap(2): MAP_ANON Map anonymous memory not associated with any specific file. The file descriptor used for creating MAP_ANON must be -1. The offset parameter is ignored. Ben "You have your mind on computers, it seems." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message