From owner-freebsd-current@FreeBSD.ORG Sun Oct 7 11:57:42 2007 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1207216A41A; Sun, 7 Oct 2007 11:57:42 +0000 (UTC) (envelope-from jroberson@chesapeake.net) Received: from webaccess-cl.virtdom.com (webaccess-cl.virtdom.com [216.240.101.25]) by mx1.freebsd.org (Postfix) with ESMTP id C90B213C448; Sun, 7 Oct 2007 11:57:41 +0000 (UTC) (envelope-from jroberson@chesapeake.net) Received: from [192.168.1.103] (c-67-160-44-208.hsd1.wa.comcast.net [67.160.44.208]) (authenticated bits=0) by webaccess-cl.virtdom.com (8.13.6/8.13.6) with ESMTP id l97BvN6U045575 (version=TLSv1/SSLv3 cipher=DHE-DSS-AES256-SHA bits=256 verify=NO); Sun, 7 Oct 2007 07:57:24 -0400 (EDT) (envelope-from jroberson@chesapeake.net) Date: Sun, 7 Oct 2007 05:00:05 -0700 (PDT) From: Jeff Roberson X-X-Sender: jroberson@10.0.0.1 To: Marc Fonvieille In-Reply-To: <20071007095408.GA997@gothic.blackend.org> Message-ID: <20071007045911.Y912@10.0.0.1> References: <20071002165007.D587@10.0.0.1> <20071006074429.GB976@gothic.blackend.org> <20071006102113.GC976@gothic.blackend.org> <47077951.5030906@clearchain.com> <4707866F.7030605@FreeBSD.org> <20071006143141.GD976@gothic.blackend.org> <4707CF8D.3070303@u.washington.edu> <20071006191014.GB84780@abigail.blackend.org> <20071007012049.S912@10.0.0.1> <20071007013342.D912@10.0.0.1> <20071007095408.GA997@gothic.blackend.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: Garrett Cooper , Benjamin Close , current@freebsd.org Subject: Re: ULE/yielding patch for testing. X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 07 Oct 2007 11:57:42 -0000 On Sun, 7 Oct 2007, Marc Fonvieille wrote: > On Sun, Oct 07, 2007 at 01:35:50AM -0700, Jeff Roberson wrote: >>>> [...] >>>> Not really when the slowness does not exist with 6.X. >>> >>> I have experienced certain websites causing firefox to slow down >>> considerably. When I mouse over firefox the mouse begins to jerk as well >>> but when I move back away from firefox it seems fine again. I suspected >>> it was an x/firefox bug. >> >> Actually I double-checked this case with dailytech.com. It seems to be >> spending all of the cpu time in user-space in xwindows. So it seems that >> it is the new xwindows that has the problem. If you watch the 'TIME' field >> of top you can see that very little cpu time is attributed to firefox and >> quite a lot to X windows. So the windowing system is too busy to redraw >> mouse events even if we are scheduling it well. >> > > You mean Xorg 7.2 or 7.3 with -CURRENT? > Currently I observe the problem with Xorg 7.2 or 7.3 under -CURRENT, > when Xorg 7.2 with 6.2-STABLE is Ok (I did not try with Xorg 7.3 on > -STABLE, but I'm quite sure I'll end to same result). > On a completly different machine (a more recent one with a 2.8GHz > Celeron), the problem could be less obvious cause of the machine speed > but I can notice the difference between 6.2-STABLE and 7-CURRENT with > any Xorg version. Can you give a dozen lines of 'vmstat 1' output while rendering this page in 7.0 and 6.2? Thanks, Jeff > >> Jeff >> >>> >>> Although I also sometimes observe mysql hanging for a period of a half >>> second or so while running sysbench. I wonder if we don't have a >>> threading library bug? I know I observed this prior to the thread_lock >>> work so hopefully I didn't break it. >>> > > I think a lot of people missed that problem cause they run fast > machines. For me it's very difficult to track down the issue cause I'm > ignorant in these OS areas and the various logs and tools don't give > obvious information. > > -- > Marc >