From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268139AbUHQH4I (ORCPT ); Tue, 17 Aug 2004 03:56:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268140AbUHQH4I (ORCPT ); Tue, 17 Aug 2004 03:56:08 -0400 Received: from mustang.oldcity.dca.net ([216.158.38.3]:44994 "HELO mustang.oldcity.dca.net") by vger.kernel.org with SMTP id S268139AbUHQH4C (ORCPT ); Tue, 17 Aug 2004 03:56:02 -0400 Subject: Re: [patch] Latency Tracer, voluntary-preempt-2.6.8-rc4-O6 From: Lee Revell To: Ingo Molnar Cc: linux-kernel , Felipe Alfaro Solana , Florian Schmidt , tytso@mit.edu In-Reply-To: <20040817074826.GA1238@elte.hu> References: <20040726204720.GA26561@elte.hu> <20040729222657.GA10449@elte.hu> <20040801193043.GA20277@elte.hu> <20040809104649.GA13299@elte.hu> <20040810132654.GA28915@elte.hu> <20040812235116.GA27838@elte.hu> <1092374851.3450.13.camel@mindpipe> <1092375673.3450.15.camel@mindpipe> <20040813103151.GH8135@elte.hu> <1092699974.13981.95.camel@krustophenia.net> <20040817074826.GA1238@elte.hu> Content-Type: text/plain Message-Id: <1092729419.816.19.camel@krustophenia.net> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Tue, 17 Aug 2004 03:56:59 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2004-08-17 at 03:48, Ingo Molnar wrote: > > + return nbytes; > > + > > since this effectively disables the random driver i cannot add it to the > patch. > Yes, I figured as much, this is more of a temporary workaround, so we can continue to identify other issues - otherwise this one shows up constantly in latency_trace. > there's another thing you could try: various SHA_CODE_SIZE values in > drivers/char/random.c. Could you try 1, 2 and 3, does it change the > overhead as seen in the trace? > Sure, I will test this. Lee