Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030869AbWI0VVn (ORCPT ); Wed, 27 Sep 2006 17:21:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030870AbWI0VVn (ORCPT ); Wed, 27 Sep 2006 17:21:43 -0400 Received: from fmmailgate02.web.de ([217.72.192.227]:57520 "EHLO fmmailgate02.web.de") by vger.kernel.org with ESMTP id S1030869AbWI0VVk (ORCPT ); Wed, 27 Sep 2006 17:21:40 -0400 Message-ID: <008f01c6e27a$f9bd5460$962e8d52@aldipc> From: "roland" To: "Fengguang Wu" Cc: , , References: <0e2001c6de7a$fe756280$962e8d52@aldipc> <359067036.19509@ustc.edu.cn> Subject: Re: I/O statistics per process Date: Wed, 27 Sep 2006 23:22:02 +0200 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1690 Lines: 42 thanks. tried to contact redflag, but they don`t answer. maybe support is being on holiday.... !? linux kernel hackers - there is really no standard way to watch i/o metrics (bytes read/written) at process level? it`s extremly hard for the admin to track down, what process is hogging the disk - especially if there is more than one task consuming cpu. meanwhile i found blktrace and read into the documenation. looks really cool and seems to be very powerful tool - but it it`s seems a little bit "oversized" and not the right tool for this. seems to be for tracing/debugging/analysis what about http://lkml.org/lkml/2005/9/12/89 "with following patch, userspace processes/utilities will be able to access per process I/O statistics. for example, top like utilites can use this information" which has been posted to lkml one year ago ? any update on this ? roland ----- Original Message ----- From: "Fengguang Wu" To: "roland" Cc: Sent: Sunday, September 24, 2006 5:04 AM Subject: Re: I/O statistics per process > On Fri, Sep 22, 2006 at 09:12:05PM +0200, roland wrote: >> is there a modified top/ps with i/o column, or is there yet missing >> something at the kernel level for getting that counters from ? > > Red Flag(http://www.redflag-linux.com/eindex.html) has developed an > iotop based on kprobes/systemtap. You can contact them if necessary. - 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/