From owner-freebsd-stable@FreeBSD.ORG Thu Jan 24 15:47:56 2008 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 68FC316A4A7 for ; Thu, 24 Jan 2008 15:47:56 +0000 (UTC) (envelope-from ws@au.dyndns.ws) Received: from ipmail05.adl2.internode.on.net (ipmail05.adl2.internode.on.net [203.16.214.145]) by mx1.freebsd.org (Postfix) with ESMTP id ED61613C469 for ; Thu, 24 Jan 2008 15:47:55 +0000 (UTC) (envelope-from ws@au.dyndns.ws) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgAAAJZAmEeWZWdv/2dsb2JhbAAIrzo X-IronPort-AV: E=Sophos;i="4.25,244,1199626200"; d="scan'208";a="41669760" Received: from ppp103-111.static.internode.on.net (HELO [192.168.1.131]) ([150.101.103.111]) by ipmail05.adl2.internode.on.net with ESMTP; 25 Jan 2008 02:17:54 +1030 From: Wayne Sierke To: stable@freebsd.org Content-Type: text/plain Date: Fri, 25 Jan 2008 02:17:52 +1030 Message-Id: <1201189672.2075.19.camel@predator-ii.buffyverse> Mime-Version: 1.0 X-Mailer: Evolution 2.12.3 FreeBSD GNOME Team Port Content-Transfer-Encoding: 7bit Cc: Subject: ktrdumps for masochists (a dump with KTR_ENTRIES=524288) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jan 2008 15:47:56 -0000 In an attempt to obtain a ktrdump from one of these lengthy (1-2s) "freezes" I'm seeing when moving an active window running glxgears, I configured a kernel with a 512k ktr buffer size. I still couldn't catch any significant part of the event because of the high rate of context-switching with glxgears running, and the problem of stopping the logging quickly after cessation of the event. The dump contains less than 300ms of events. It required nearly 700MB of memory to open with schedgraph.py. Which took over 10 minutes to load on this 2.4GHz P4 (no swapping). I thought I'd make it available in case someone had a use for it... http://au.dyndns.ws/public/ktr-sched_move-glxgears-200801250033.out.bz2 Wayne