From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753402AbZH3TwX (ORCPT ); Sun, 30 Aug 2009 15:52:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752886AbZH3TwW (ORCPT ); Sun, 30 Aug 2009 15:52:22 -0400 Received: from fg-out-1718.google.com ([72.14.220.153]:19619 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752786AbZH3TwV (ORCPT ); Sun, 30 Aug 2009 15:52:21 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=jXZN/AUHff5GeHkoTQFTOotsrTat2akKv6kdUneczeuW8akAbJHMH7VbMe1vP2YBnD sYAglWrjva4hcbTB//8y4+dmTqKoAxWBJgapaxuOcELnQ4PWI2p09dIgm6gpCaGbx6kS N/rK5sYq69uCajmroi3KkuLhvk14jsPko1ZQQ= MIME-Version: 1.0 In-Reply-To: <200907211154.42563.knikanth@suse.de> References: <200907211031.48294.knikanth@suse.de> <20090721060114.GS24157@balbir.in.ibm.com> <200907211154.42563.knikanth@suse.de> Date: Sun, 30 Aug 2009 21:52:22 +0200 Message-ID: <3d8471ca0908301252j15cb33b1j913921bd8fc6704c@mail.gmail.com> Subject: Re: [PATCH 1/3] taskstats-fork: Add a new taskstats command to get notification on fork/clone From: Guillaume Chazarain To: Nikanth Karthikesan Cc: balbir@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, procps-feedback@lists.sf.net, Albert Cahalan Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 21, 2009 at 8:24 AM, Nikanth Karthikesan wrote: > Ah.. proc-events was the exact thing, I was looking for! Thanks. AFAICT proc-events can only be used by root, so that makes it unsuitable for *top. Anyway, iotop will always have to iterate over all threads to query their taskstats and other attributes, so the O(nr_threads) complexity is unavoidable. Thanks. -- Guillaume