From owner-freebsd-hackers@FreeBSD.ORG Thu Sep 15 14:26:17 2005 Return-Path: X-Original-To: freebsd-hackers@freebsd.org Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id AD8EE16A41F for ; Thu, 15 Sep 2005 14:26:17 +0000 (GMT) (envelope-from pranavpeshwe@gmail.com) Received: from xproxy.gmail.com (xproxy.gmail.com [66.249.82.202]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3155343D45 for ; Thu, 15 Sep 2005 14:26:17 +0000 (GMT) (envelope-from pranavpeshwe@gmail.com) Received: by xproxy.gmail.com with SMTP id i31so175628wxd for ; Thu, 15 Sep 2005 07:26:16 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:reply-to:from:to:references:subject:date:mime-version:content-type:content-transfer-encoding:x-priority:x-msmail-priority:x-mailer:x-mimeole; b=iT5WlcBJN+/HR7J2q5ri3B5Tdz8qZLQVUpGE+Uwbl2EGb6i+H0o2qu9/Jrbbvdox7UiLd7zZhhJe4I2vnWZoAprAZDLD4bWUqKMhoJfp6Fg6yjXfAJGYKW7EXksjwisIDfMPJK9f3EEEnP0CLYHVrxF9lDNeET0IUHHUoAOnx0g= Received: by 10.70.126.2 with SMTP id y2mr422099wxc; Thu, 15 Sep 2005 07:26:16 -0700 (PDT) Received: from pranav ( [59.95.1.9]) by mx.gmail.com with ESMTP id i39sm1127469wxd.2005.09.15.07.26.11; Thu, 15 Sep 2005 07:26:16 -0700 (PDT) Message-ID: <000801c5ba04$b82efd90$0201a8c0@pranav> From: "Pranav Peshwe" To: "Luigi Rizzo" , References: <00bd01c5b9f7$8f629370$0201a8c0@pranav> <20050915060132.A64948@xorpc.icir.org> Date: Thu, 15 Sep 2005 19:52:15 +0530 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Cc: Subject: Re: IO schedulers in FBSD... X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Pranav Peshwe List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Sep 2005 14:26:17 -0000 ----- Original Message ----- From: "Luigi Rizzo" To: "Pranav Peshwe" Cc: Sent: Thursday, September 15, 2005 6:31 PM Subject: Re: IO schedulers in FBSD... > On Thu, Sep 15, 2005 at 06:45:27PM +0530, Pranav Peshwe wrote: > > Hello, > > Which is the I/O scheduler used by FBSD 5.4 ? > > I googled in various ways but could not get an answer. > > it is called FCFSUSIIABPIWCTTOIS, which stands for > First Come First Serve Unless Someone Is In A Better Position > In Which Case The Temporal Order Is Subverted > > also known as the standard one-way elevator taught in all operating > system courses. > > > I do not have access to the source code. > > you do, it is at > > http://www.freebsd.org/cgi/cvsweb.cgi/ > > ready for your perusal. > > cheers > luigi Thank you very much for the name and the source link.Is there any documentation available on this topic(fbsd io schedulers) ? Where is the io scheduler located in the src code tree ? -- I found one more source for browsing the sources. http://fxr.watson.org/ -- TIA. Sincere regards, Pranav --------------------------------------------------------------------------- When I die, I want to die like my friend's grandmother, who died peacefully in her sleep. Not screaming like all the passengers in her car.