Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!feeds.phibee-telecom.net!newsfeed.xs4all.nl!newsfeed4.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.005 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'interpreter': 0.05; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:skip:f 10': 0.09; 'subject:still': 0.09; 'suggest': 0.14; '"new': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'threads.': 0.16; 'url:dabeaz': 0.16; 'fix': 0.17; 'wrote:': 0.18; 'hack': 0.22; 'header:User-Agent:1': 0.23; "aren't": 0.24; 'header:X-Complaints-To:1': 0.27; 'room': 0.29; "d'aprano": 0.31; 'overhead': 0.31; 'steven': 0.31; 'url:python': 0.33; 'programmers': 0.33; 'something': 0.35; 'but': 0.35; 'there': 0.35; "didn't": 0.36; 'responsible': 0.36; 'subject:?': 0.36; 'performance': 0.37; 'improving': 0.38; 'to:addr:python-list': 0.38; 'fact': 0.38; 'subject:" ': 0.39; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'url:pdf': 0.68; 'horrible': 0.84; 'subject:High': 0.84; 'problems?': 0.91 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Sturla Molden Subject: Re: "High water" Memory fragmentation still a thing? Date: Sat, 4 Oct 2014 17:51:28 +0000 (UTC) References: <542f8a27$0$12998$c3e8da3$5496439d@news.astraweb.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Gmane-NNTP-Posting-Host: 185-67-11.connect.netcom.no User-Agent: NewsTap/4.0.1 (iPad) X-: X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 19 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1412445101 news.xs4all.nl 2834 [2001:888:2000:d::a6]:39605 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:78701 Steven D'Aprano wrote: > [Aside: The thing that people fail to understand is that the GIL is not in > fact something which *prevents* multi-tasking, but it *enables* cooperative > multi-tasking: > > http://www.dabeaz.com/python/GIL.pdf > > although that's not to say that there aren't some horrible performance > characteristics of the GIL. David Beazley has identified issues with the > GIL which suggest room for improving the GIL and avoiding "GIL battles" > which are responsible for much of the overhead of CPU-bound threads. Any C > programmers who want to hack on the interpreter core?] Didn't the "new GIL" fix some of these problems? Sturla