From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from m0.truegem.net (m0.truegem.net [69.55.228.47]) by sourceware.org (Postfix) with ESMTPS id B48DB385E027 for ; Mon, 23 Mar 2020 09:42:24 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org B48DB385E027 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=maxrnd.com Authentication-Results: sourceware.org; spf=none smtp.mailfrom=mark@maxrnd.com Received: (from daemon@localhost) by m0.truegem.net (8.12.11/8.12.11) id 02N9gNG6032762 for ; Mon, 23 Mar 2020 02:42:23 -0700 (PDT) (envelope-from mark@maxrnd.com) Received: from 162-235-43-67.lightspeed.irvnca.sbcglobal.net(162.235.43.67), claiming to be "[192.168.1.100]" via SMTP by m0.truegem.net, id smtpdgad6Oc; Mon Mar 23 01:42:15 2020 Subject: Re: Why is taskset still not in util-linux? To: cygwin@cygwin.com References: <1348011a-261a-2a87-d361-4e51fa8dc19f@cs.umass.edu> <85ae12aa-6cc3-5d4c-5df2-25bf811ec6a9@maxrnd.com> <72fea68a-b3d7-e87c-726f-8a5a2587a992@maxrnd.com> <01e3d337-e5fe-f393-7634-3f1881bca315@cs.umass.edu> <79d7afa5-a07b-04df-c259-b76c61390f8c@maxrnd.com> <92157259-166d-a85d-2db7-a8e30c75ec09@cs.umass.edu> <99d74893-f9f8-4d8d-a400-dfe247660bf0@maxrnd.com> <20200323093158.GA3261@calimero.vinschen.de> From: Mark Geisert Message-ID: Date: Mon, 23 Mar 2020 02:42:15 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Firefox/52.0 SeaMonkey/2.49.4 MIME-Version: 1.0 In-Reply-To: <20200323093158.GA3261@calimero.vinschen.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-13.1 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, KAM_LAZY_DOMAIN_SECURITY, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=no autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Cygwin mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Mar 2020 09:42:27 -0000 Corinna Vinschen wrote: > On Mar 21 10:41, Brian Inglis wrote: >> On 2020-03-21 02:18, Mark Geisert wrote: >>> Eliot Moss wrote: >>>> On 3/20/2020 1:54 AM, Mark Geisert wrote: >>>>> I've reproduced your snags. It/they are due to my having forgotten >>>>> another tiny update that should have been part of the >>>>> 2.33.1-cygwin-cpuset.patch file. If you >>>>> 'echo "#define SYS_sched_getaffinity 42" > /usr/local/include/sys/syscall.h' >>>>> and then back out your other fix attempts, the build using cygport should >>>>> work. >>>> Once I did that properly, it built without commenting out that test. Yay! >> >>> I ended up installing Process Lasso to follow processes among the cpus and to >>> test the Cygwin affinity mask implementation.  It has a free trial period.  And >>> I wrote a simple test program that just advances from one cpu to the next >>> repeatedly, cpu-bound between steps, so PL can display the changing cpu. >> >> Anyone know if this feature support or what feature support will get top P/last >> used CPU and/or procps-ng P/sgi_p currently executing CPU and PSR/currently >> assigned CPU showing actual CPUs rather than 0/zero? >> >> Anyone know if or where or how this info is available on Windows or a link to >> it? I've looked at Google and SO results and nothing useful is apparent. > > Can't we just fake the calls? Brian is asking for a way to watch processes globally, as they are scheduled back and forth on the available cpus. I was a bit sloppy in my wording above; what Process Lasso displays is the changing process affinity mask for a process I wrote to do just that. I don't know of a way to ask Windows which cpu a process is currently scheduled onto. ..mark