From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sun, 12 May 2002 18:14:01 -0300 (BRT) From: Rik van Riel Subject: Re: [RFC][PATCH] IO wait accounting In-Reply-To: <87bsbl9ogw.fsf@atlas.iskon.hr> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Zlatko Calusic Cc: Bill Davidsen , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Sun, 12 May 2002, Zlatko Calusic wrote: > Rik van Riel writes: > > > > And should we measure read() waits as well as page faults or > > just page faults ? > > Definitely both. OK, I'll look at a way to implement these stats so that every IO wait counts as iowait time ... preferably in a way that doesn't touch the code in too many places ;) > Somewhere on the web was a nice document explaining > how Solaris measures iowait%, I read it few years ago and it was a > great stuff (quite nice explanation). > > I'll try to find it, as it could be helpful. Please, it would be useful to get our info compatible with theirs so sysadmins can read their statistics the same on both systems. kind regards, Rik -- Bravely reimplemented by the knights who say "NIH". 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/