Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266172AbUA2PDU (ORCPT ); Thu, 29 Jan 2004 10:03:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266170AbUA2PDU (ORCPT ); Thu, 29 Jan 2004 10:03:20 -0500 Received: from crafty.cis.uab.edu ([138.26.64.17]:9953 "EHLO crafty.cis.uab.edu") by vger.kernel.org with ESMTP id S266169AbUA2PDQ (ORCPT ); Thu, 29 Jan 2004 10:03:16 -0500 Date: Thu, 29 Jan 2004 09:02:41 -0600 (CST) From: "Robert M. Hyatt" To: Nick Piggin cc: Catalin BOIE , , Subject: Re: 2.6.2-rc2 Interactivity problems with SMP + HT In-Reply-To: <4018E524.8060200@cyberone.com.au> Message-ID: 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: 1773 Lines: 57 It might be some IDE disk I/O that results from flushing buffers or whatever. I don't see this on my SCSI boxes, but I have seen an IDE box get sluggish at times due to I/O. On Thu, 29 Jan 2004, Nick Piggin wrote: > > > Catalin BOIE wrote: > > >Hello! > > > >First, thank you very much for the effort you put for Linux! > > > >I have a Intel motherboard with SATA (2 Maxtor disks). > >CPUs: 2 x 2.4GHz PIV HT = 4 processors (2 virtual) > >1 GB RAM. > > > >Load: postgresql and apache. Very low load (3-4 clients). > > > >RAID: Yes, soft RAID1 between the 2 disks. > > > >I have times when the console freeze for 3-4 seconds! > >2.6.0-test11 had the same problem (maybe longer times). > >2.6.1-rc2 worked good in this respect but crashed after 2 days. :( > >2.6.2-rc2 is back with the delay. > > > >Do you know why this can happen? > > > > > > There haven't been many scheduler changes there recently so > maybe its something else. > > But you could try the latest -mm kernels. They have some > Hyperthreading work in them (you need to enable CONFIG_SCHED_SMT). > > - > To unsubscribe from this list: send the line "unsubscribe linux-smp" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Robert M. Hyatt, Ph.D. Computer and Information Sciences hyatt@uab.edu University of Alabama at Birmingham (205) 934-2213 136A Campbell Hall (205) 934-5473 FAX Birmingham, AL 35294-1170 - 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/