From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from ecvwall1.wipro.com ([164.164.23.6]) by wiprom2mx1.wipro.com (8.11.3/8.11.3) with SMTP id g4DDrEZ07768 for ; Mon, 13 May 2002 19:23:15 +0530 (IST) From: "BALBIR SINGH" Subject: RE: [RFC][PATCH] IO wait accounting Date: Mon, 13 May 2002 17:10:17 +0530 Message-ID: MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_NextPartTM-000-aabc047c-6650-11d6-a942-00b0d0d06be8" In-reply-to: Sender: owner-linux-mm@kvack.org Return-Path: To: Rik van Riel , Zlatko Calusic Cc: Bill Davidsen , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: This is a multi-part message in MIME format. ------=_NextPartTM-000-aabc047c-6650-11d6-a942-00b0d0d06be8 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I found a URL that you might find useful. http://sunsite.uakom.sk/sunworldonline/swol-08-1997/swol-08-insidesolaris.ht ml Simple and straight forward implementation of a per-cpu iowait statistics counter. Balbir |-----Original Message----- |From: linux-kernel-owner@vger.kernel.org |[mailto:linux-kernel-owner@vger.kernel.org]On Behalf Of Rik van Riel |Sent: Monday, May 13, 2002 2:44 AM |To: Zlatko Calusic |Cc: Bill Davidsen; linux-mm@kvack.org; linux-kernel@vger.kernel.org |Subject: Re: [RFC][PATCH] IO wait accounting | | |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 from this list: send the line "unsubscribe linux-kernel" in |the body of a message to majordomo@vger.kernel.org |More majordomo info at http://vger.kernel.org/majordomo-info.html |Please read the FAQ at http://www.tux.org/lkml/ ------=_NextPartTM-000-aabc047c-6650-11d6-a942-00b0d0d06be8 Content-Type: text/plain; name="Wipro_Disclaimer.txt" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="Wipro_Disclaimer.txt" **************************Disclaimer************************************ Information contained in this E-MAIL being proprietary to Wipro Limited is 'privileged' and 'confidential' and intended for use only by the individual or entity to which it is addressed. You are notified that any use, copying or dissemination of the information contained in the E-MAIL in any manner whatsoever is strictly prohibited. ******************************************************************** ------=_NextPartTM-000-aabc047c-6650-11d6-a942-00b0d0d06be8-- -- 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/