Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 4 Jan 2002 00:35:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 4 Jan 2002 00:34:49 -0500 Received: from webcon.net ([216.187.106.140]:3224 "EHLO webcon.net") by vger.kernel.org with ESMTP id ; Fri, 4 Jan 2002 00:34:43 -0500 Date: Fri, 4 Jan 2002 00:34:30 -0500 (EST) From: Ian Morgan To: Ingo Molnar cc: Linux Kernel Mailing List Subject: Re: [announce] [patch] ultra-scalable O(1) SMP and UP scheduler In-Reply-To: Message-ID: Organization: "Webcon, Inc." 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 On Fri, 4 Jan 2002, Ingo Molnar wrote: > for 2.4.17: > > http://redhat.com/~mingo/O(1)-scheduler/sched-O1-2.4.17-A0.patch > i did a fair number of UP and 2.4.17 tests as well. > Comments, bug reports, suggestions are welcome, Well, tried it out here on 2.4.17 (w/ ide.2.4.16 & freeswan_1.91) (and after patching md.c and loop.c), and boy did it blow chunks! ;-) First, loading the software watchdog module caused the thing to lock up solid during boot. No SysRq response, and nmi_watchdog did nada too. Next, after disabling the s/w watchdog, I could boot up.. great, I though it was all happy. I tried starting up 1 instance of setiathome, and saw how nicely it (mostly) remained affine to 1 processor, occasionally switching to the 2nd, and back again, maybe every 5-10 seconds. Next, though, I couldn't figure out why Mozilla wouldn't load. Then I noticed I could not open any more xterms. When I went to one open xterm to do some digging, I noticed very long pauses, where no keyboard input would be accepted, yet the mouse and the window manager remained responsive. Other tasks, like my scrolling network usage graph applet would stall as well. Eventually (after another minute or so), the box locked up solid. Well, I really liked the sound of this patch. Seemed very well though out. Too bad it doesn't like me! :-( You seem to indicate you've done (some) testing on 2.4.17, so I'm somewhat surprised that it died on me so quickly here. What more info can I give you that might help track the problem? Box: 2x Celeron / ABIT BP6 / 384MB Gnu C 2.95.3 Gnu make 3.78.1 binutils 2.10.1.0.2 util-linux 2.10s mount 2.10s modutils 2.4.0 e2fsprogs 1.19 reiserfsprogs 3.x.0j pcmcia-cs 3.1.31 PPP 2.4.0 Linux C Library 2.1.3 Dynamic linker (ldd) 2.1.3 Linux C++ Library 2.10.0 Procps 2.0.6 Net-tools 1.54 Console-tools 0.3.3 Sh-utils 2.0 Modules Loaded sb sb_lib uart401 sound soundcore printer hid input usb-uhci usbcore tulip ipt_mac ipt_state iptable_mangle ipt_LOG ipt_REJECT ip_nat_ftp ip_conntrack_ftp iptable_nat ip_conntrack iptable_filter ip_tables Regards, Ian Morgan -- ------------------------------------------------------------------- Ian E. Morgan Vice President & C.O.O. Webcon, Inc. imorgan@webcon.net PGP: #2DA40D07 www.webcon.net ------------------------------------------------------------------- - 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/