From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from burns.conectiva (burns.conectiva [10.0.0.4]) by perninha.conectiva.com.br (Postfix) with SMTP id E7AEC3948B for ; Thu, 9 May 2002 16:08:51 -0300 (EST) Date: Thu, 9 May 2002 16:08:16 -0300 (BRT) From: Rik van Riel Subject: Re: [RFC][PATCH] IO wait accounting In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Bill Davidsen Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Thu, 9 May 2002, Bill Davidsen wrote: > I have been simply counting WaitIO ticks when there is (a) no runable > process in the system, and (b) at least one process blocked for disk i/o, > either page or program. And instead of presenting it properly I just > stuffed it in a variable and read it from kmem. OK, how did you measure this ? And should we measure read() waits as well as page faults or just page faults ? regards, Rik -- http://www.linuxsymposium.org/2002/ "You're one of those condescending OLS attendants" "Here's a nickle kid. Go buy yourself a real t-shirt" http://www.surriel.com/ http://distro.conectiva.com/ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/