From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11337 invoked by alias); 4 Dec 2011 07:55:32 -0000 Received: (qmail 11329 invoked by uid 22791); 4 Dec 2011 07:55:32 -0000 X-SWARE-Spam-Status: No, hits=-1.1 required=5.0 tests=BAYES_00,SPF_NEUTRAL X-Spam-Check-By: sourceware.org Received: from smtp0.epfl.ch (HELO smtp0.epfl.ch) (128.178.224.219) by sourceware.org (qpsmtpd/0.43rc1) with SMTP; Sun, 04 Dec 2011 07:55:18 +0000 Received: (qmail 12819 invoked by uid 107); 4 Dec 2011 07:55:14 -0000 Received: from 69-196-169-55.dsl.teksavvy.com (HELO [192.168.0.100]) (69.196.169.55) (authenticated) by smtp0.epfl.ch (AngelmatoPhylax SMTP proxy) with ESMTPA; Sun, 04 Dec 2011 08:55:15 +0100 Message-ID: <4EDB2761.6040508@cs.utoronto.ca> Date: Sun, 04 Dec 2011 07:55:00 -0000 From: Ryan Johnson User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20111105 Thunderbird/8.0 MIME-Version: 1.0 To: cygwin@cygwin.com Subject: Re: Machine very sluggish while compiling References: <4ECEE88E.5050307@cs.utoronto.ca> <20111125154751.GP28395@trikaliotis.net> In-Reply-To: <20111125154751.GP28395@trikaliotis.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com X-SW-Source: 2011-12/txt/msg00057.txt.bz2 On 25/11/2011 10:47 AM, Spiro Trikaliotis wrote: > Hello, > > * On Thu, Nov 24, 2011 at 07:59:58PM -0500 Ryan Johnson wrote: > >> Lately I've noticed that running make -j4 on my quad-core win7-x64 >> machine causes it to become sluggish or even unresponsive. > I have seen very similar effects on my Win7-64 box. I can force the > problem here just be running "ccrypt", though, I do not need to use "make > -j4". > > I assume it has to do with the Windows 64 bit problems of Cygwin (search > the ML archives for that). > > For me, this is the first machine since years where I do not use Cygwin > because of this issue. Update: I hit the problem again, this time running python, and the problem is repeatable with the native 64-bit windows python interpreter. It looks like cygwin doesn't cause the problem, but rather my high-cpu tasks tend to run under cygwin. Honestly, I wouldn't expect cygwin to be the cause, given that it's a user space only piece of software! Now what other entity could be the cause, I haven't a clue... process explorer doesn't show anything. Maybe that's because it's frozen along with the rest of the world during these episodes; right as it comes back I see context switch deltas above 100k for the interrupt/DPC module, which suggests I've got a wonky driver somewhere. Ryan -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple