Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 8 Sep 2002 11:37:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 8 Sep 2002 11:37:54 -0400 Received: from [63.209.4.196] ([63.209.4.196]:54790 "EHLO neon-gw.transmeta.com") by vger.kernel.org with ESMTP id ; Sun, 8 Sep 2002 11:37:54 -0400 From: Linus Torvalds Date: Sun, 8 Sep 2002 08:45:26 -0700 Message-Id: <200209081545.g88FjQZ10714@penguin.transmeta.com> To: jmorris@intercode.com.au, linux-kernel@vger.kernel.org Subject: Re: Performance issue in 2.5.32+ Newsgroups: linux.dev.kernel In-Reply-To: Organization: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 860 Lines: 21 This looks ridiculous, a 1000 us latency is one millisecond, which would seem to imply that something is getting synchronized with the timer interrupt for some reason. You also have a few other outliers (TCP latency and file delete), AND your memory performance also went down a lot. Quite frankly, the memory performance thing has nothing to do with the OS, so there's something else going on on your machine. That "something else" may be some process that is constantly running one one CPU or something. Maybe something got confused by the kernel change, and is now getting stuck in the background? 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/