Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!news2.arglkargh.de!newsfeed.fsmpi.rwth-aachen.de!newsfeed1.swip.net!uio.no!news.tele.dk!news.tele.dk!small.news.tele.dk!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 0.007 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'function,': 0.09; 'pages.': 0.09; 'subject:into': 0.09; 'cc:addr:python-list': 0.11; 'jan': 0.12; 'easily,': 0.16; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'subject:make': 0.16; 'wrote:': 0.18; 'wed,': 0.18; 'else,': 0.19; 'cc:addr:python.org': 0.22; 'cc:2**0': 0.24; '15,': 0.26; 'header:In-Reply-To:1': 0.27; 'am,': 0.29; 'message-id:@mail.gmail.com': 0.30; 'easier': 0.31; 'could': 0.34; 'case,': 0.35; 'but': 0.35; 'received:google.com': 0.35; 'module.': 0.36; 'subject:?': 0.36; 'too': 0.37; 'rather': 0.38; 'took': 0.61; 'to:none': 0.92 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:cc :content-type; bh=/q0V8AH8joSq9NCI8dUDVaoGWTkrfmnHDJqLtVuLpfE=; b=VdF90HHCFcTFY5HoZ9q6pwpPM1XBYP5aMBezy9kLEqL17myEzt/R+GdLQhJ9HzThJR p8xOnrBtQGn02zOVLjSFl2qQaQDMx/JLVoF+dJH+X7aDppdjhdcfhuB9WXkLP1b1Gniw tOEyXDNbci8oPPA92jPbzkpwT07Dgiv2VGU4o62iH/GL9E8ngo1aiVZ8IcJ9sG8pm3cy bSwk2s48EubmCw58FYwxg9dIJ81YOZY29wODvZHIpUB3IpgsxetVGU9z2LQJTmOKeB0P DiRoLTOFiyUUkVkkG21sBiXX1CaPY6nS7UVvA9W1liGpjWUeiYU/b8yJhDNdX8SYpmqK HZUA== MIME-Version: 1.0 X-Received: by 10.68.98.3 with SMTP id ee3mr3961838pbb.31.1389730069282; Tue, 14 Jan 2014 12:07:49 -0800 (PST) In-Reply-To: <812aa8be-7a8d-4a15-86f1-deec17d68aad@googlegroups.com> References: <812aa8be-7a8d-4a15-86f1-deec17d68aad@googlegroups.com> Date: Wed, 15 Jan 2014 07:07:49 +1100 Subject: Re: fork seems to make urlopen into a black hole? From: Chris Angelico Cc: "python-list@python.org" Content-Type: text/plain; charset=UTF-8 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: 10 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1389730078 news.xs4all.nl 2889 [2001:888:2000:d::a6]:59201 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:63936 On Wed, Jan 15, 2014 at 7:04 AM, BobAalsma wrote: > A program took much too long to check some texts collected from web pages. > As this could be made parallel easily, I put in fork. Rather than using the low-level fork() function, you may find it easier to manage things if you use the multiprocessing module. I don't know if it'll help in this specific case, but if nothing else, it'll be easier to see what's going on. ChrisA