Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756894AbXEUQE5 (ORCPT ); Mon, 21 May 2007 12:04:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755293AbXEUQEu (ORCPT ); Mon, 21 May 2007 12:04:50 -0400 Received: from smtp2.linux-foundation.org ([207.189.120.14]:46240 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755204AbXEUQEt (ORCPT ); Mon, 21 May 2007 12:04:49 -0400 Date: Mon, 21 May 2007 08:57:16 -0700 (PDT) From: Linus Torvalds To: Anant Nitya cc: Linux Kernel Mailing List , Ingo Molnar , Andrew Morton , "David S. Miller" Subject: Re: [patch] CFS scheduler, -v13 In-Reply-To: <200705200246.22444.kernel@prachanda.hub> Message-ID: References: <20070517174533.GA538@elte.hu> <200705180317.06014.kernel@prachanda.hub> <20070518102607.GA23151@elte.hu> <200705200246.22444.kernel@prachanda.hub> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1264 Lines: 32 On Sun, 20 May 2007, Anant Nitya wrote: > > After digging in a bit I found that problem is only occurring in > 2.6.22-rc1 and it get fired by network usage while transmitting data > upstream. Can you bisect it? Just do git bisect start git bisect good v2.6.21 git bisect bad v2.6.22-rc1 and start testing the end result. The bisection thing is pretty efficient, so while there's almost 5000 commits in there, you realy shouldn't need to test more than ten kernels to get it narrowed down to just five commits or so, and since it seems to be very repeatable and noticeable for you, bisecting should be the trivial thing to figure out what broke. David: all the blather about network drivers and/or /proc/net/tcp being slow anyway misses the *big* point: it didn't use to do this. So there's a new bug there. Maybe something keeps sockets around in a dead state on the hash lists or whatever. Mayube something else breaks his bittorrent client. Whatever. We don't know. But it's a regression. Linus - 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/