From owner-freebsd-hackers@FreeBSD.ORG Wed Nov 7 18:51:05 2007 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DD0C116A419 for ; Wed, 7 Nov 2007 18:51:05 +0000 (UTC) (envelope-from dclements@gmail.com) Received: from rn-out-0102.google.com (rn-out-0910.google.com [64.233.170.189]) by mx1.freebsd.org (Postfix) with ESMTP id 81F8413C4BF for ; Wed, 7 Nov 2007 18:51:05 +0000 (UTC) (envelope-from dclements@gmail.com) Received: by rn-out-0102.google.com with SMTP id s42so1032447rnb for ; Wed, 07 Nov 2007 10:50:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; bh=P1Sl6tadGzoe6spqW63YD0RCzsJzrXqPwXvQEv+kk2A=; b=FavRajv6B6r3fQdwjm1QBusm/sFZ+e8sime0peh++YCnB4aEozxb5g2EV+tYZOefYDTsvrX2bTI1XZUo47sug3mhLmQEDT0aWaSq0guUB179wEprwk75rkZPU11Eo9cbWpnIfbi5anSEZ+A5Ld6+e1RZMaqwvUAYR2OfYxrNiD8= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=FupEzorVHHdxbn96XzlizHI55mrxKaVAxBlFO9lmmg9trQLcSkcOUOlQa2epJq+B6ErbchNKBgghe6YCGc4E2GsFaQo1htPXetFgyPszJvs4XUpmkJg0eBwk/gzZ8QddGsplBchvHpUDjK0YFJTxHOwkoo2UVco9+hS721k6k4U= Received: by 10.142.225.11 with SMTP id x11mr1776363wfg.1194459794762; Wed, 07 Nov 2007 10:23:14 -0800 (PST) Received: by 10.142.81.19 with HTTP; Wed, 7 Nov 2007 10:23:14 -0800 (PST) Message-ID: <54da514e0711071023g565cf98ay54ff2bb9cfeeb38a@mail.gmail.com> Date: Wed, 7 Nov 2007 10:23:14 -0800 From: "Doug Clements" To: freebsd-hackers@freebsd.org In-Reply-To: <4635.202.127.98.144.1194407276.squirrel@webmail.triplegate.net.id> MIME-Version: 1.0 References: <4635.202.127.98.144.1194407276.squirrel@webmail.triplegate.net.id> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Re: page fault & degaradation performance X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Nov 2007 18:51:05 -0000 On 11/6/07, binto wrote: > > I just wanna know, > how to reduce the number of page faults to upgrade program or OS > performance? > is there any parameters that i must set if i reduce the number of page > fault? Don't forget that some amount of page faults are normal consequences of using a machine with virtual memory. Page faults alone are not an indicator that you're out of memory or suffering in any way, they just mean that something was requested in vm that wasn't actually in ram, and needed to be loaded. Ask 'swapinfo' or 'top' to see if you might possibly benefit from more ram by reducing paging. --Doug