From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 27759 invoked by alias); 25 Nov 2011 01:00:19 -0000 Received: (qmail 27746 invoked by uid 22791); 25 Nov 2011 01:00:17 -0000 X-SWARE-Spam-Status: No, hits=-0.8 required=5.0 tests=AWL,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; Fri, 25 Nov 2011 01:00:00 +0000 Received: (qmail 11701 invoked by uid 107); 25 Nov 2011 00:59:57 -0000 Received: from 206-248-183-199.dsl.teksavvy.com (HELO discarded) (206.248.183.199) (authenticated) by smtp0.epfl.ch (AngelmatoPhylax SMTP proxy) with ESMTPA; Fri, 25 Nov 2011 01:59:57 +0100 Message-ID: <4ECEE88E.5050307@cs.utoronto.ca> Date: Fri, 25 Nov 2011 04:07:00 -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: Machine very sluggish while compiling 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: 2011-11/txt/msg00384.txt.bz2 Hi all, Lately I've noticed that running make -j4 on my quad-core win7-x64 machine causes it to become sluggish or even unresponsive. For example, compiling a large package makes the mouse jumpy, delays keystrokes, adds stutter to my music, and makes task switching painfully slow (though, oddly, if I manage to switch to the mintty that runs make the machine "comes back"). The sluggishness always hits when I'm using a native windows app with the compile running in the background. This starts to sound oddly like the recently-reported issue where X was causing native windows apps to freeze [1]. I'm not seeing any fork failures, and am running BLODA-free (Windows Defender hasn't reappeared since I last uninstalled it). There's no unusual disk activity and memory utilization remains stable. I've tried running with nice, reducing the priority of 'make' from the task manager, and running make -j3 to no avail, though empirically if utilization stays at or below 2 cpu then there's no problem. I've compiled large apps (gcc, binutils, emacs, gdb, ...) off and on for several years now and never seen this behavior before. Any ideas of how I might diagnose the issue further? It's easy enough to work around, but compiles take a lot longer with only 1-2 cores instead of 4. Thanks, Ryan [1] http://cygwin.com/ml/cygwin-xfree/2011-11/msg00027.html -- 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