From owner-freebsd-questions@FreeBSD.ORG Sun Feb 6 09:39:47 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8A7CD16A4CE for ; Sun, 6 Feb 2005 09:39:47 +0000 (GMT) Received: from mail.cs.fsu.edu (CS2075.cs.fsu.edu [128.186.122.75]) by mx1.FreeBSD.org (Postfix) with ESMTP id 312B043D53 for ; Sun, 6 Feb 2005 09:39:47 +0000 (GMT) (envelope-from mhines@cs.fsu.edu) Received: from diablo.cs.fsu.edu (diablo.cs.fsu.edu [128.186.120.2]) by mail.cs.fsu.edu (Postfix) with ESMTP id 1FEF8F2D7C for ; Sun, 6 Feb 2005 04:40:03 -0500 (EST) Received: from localhost (mhines@localhost)j169bWps025721 for ; Sun, 6 Feb 2005 04:37:32 -0500 (EST) X-Authentication-Warning: diablo.cs.fsu.edu: mhines owned process doing -bs Date: Sun, 6 Feb 2005 04:37:32 -0500 (EST) From: Michael Hines To: freebsd-questions@freebsd.org Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Subject: increasing swap activity X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Feb 2005 09:39:47 -0000 I've written a remote-memory system for a thesis of mine. As a result, I'm able to setup a diskless client that swaps to remote memory instead of a remote disk. The specifics, reasons, and design of the system are a long story.... However - this system allows for much faster page-fault latencies (on the order of 10-20 times faster than using a disk for swap space). The problem is: I cannot get the swapper to page-out or page-in data any faster. My end question is: how would one DRASTICALLY increase the rate at which the system does its paging in freebsd? Everthing I find on the net says "don't mess with freebsd's VM system or you'll die and go to hell." However, I do in fact need to drastically increase the paging bandwidth. Anybody know how? Preferably during runtime? Thanks a lot. /*********************************/ Michael R. Hines Grad Student, Florida State Dept. Computer Science http://www.cs.fsu.edu/~mhines/ Jusqu'a ce que le futur vienne... /*********************************/