From owner-freebsd-stable@FreeBSD.ORG Sun Dec 21 15:10:14 2003 Return-Path: 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 99E1A16A4CE for ; Sun, 21 Dec 2003 15:10:14 -0800 (PST) Received: from ns1.itga.com.au (ns1.itga.com.au [202.53.40.214]) by mx1.FreeBSD.org (Postfix) with ESMTP id F3CC543D5A for ; Sun, 21 Dec 2003 15:10:09 -0800 (PST) (envelope-from gnb@itga.com.au) Received: from lightning.itga.com.au (lightning.itga.com.au [192.168.71.20]) by ns1.itga.com.au (8.12.9/8.12.9) with ESMTP id hBLNA3R5099980; Mon, 22 Dec 2003 10:10:03 +1100 (EST) (envelope-from gnb@itga.com.au) Received: from lightning.itga.com.au (localhost [127.0.0.1]) by lightning.itga.com.au (8.9.3/8.9.3) with ESMTP id KAA04764; Mon, 22 Dec 2003 10:10:02 +1100 (EST) Message-Id: <200312212310.KAA04764@lightning.itga.com.au> X-Mailer: exmh version 2.4 05/15/2001 with nmh-1.0.4 From: Gregory Bond To: Paul Mather In-reply-to: Your message of Sat, 20 Dec 2003 22:32:22 -0500. Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 22 Dec 2003 10:10:01 +1100 Sender: gnb@itga.com.au cc: Matthew Dillon cc: freebsd-stable@freebsd.org Subject: Re: Problems reclaiming VM cache = XFree86 startup annoyance X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 21 Dec 2003 23:10:14 -0000 paul@gromit.dlib.vt.edu said: > Not being a Python programmer, I don't know exactly how BitTorrent is > accessing the files (e.g., using mmap), I'm no Matt Dillon when it comes to kernel guts, but I suspect if the system is saturating the disk, mmap() vs open()/read() is not going to make any difference. They all wind up at the same underlying VM machinery and banging on the same overloaded disk.