Path: csiph.com!usenet.pasdenom.info!aioe.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed5.news.xs4all.nl!xs4all!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 0.008 X-Spam-Evidence: '*H*': 0.98; '*S*': 0.00; 'frameworks': 0.05; 'memory.': 0.05; 'correct.': 0.07; 'dependency': 0.07; 'level,': 0.07; 'python': 0.09; 'received:mail-lpp01m010-f46.google.com': 0.09; 'url:github': 0.09; 'cc:addr:python-list': 0.10; 'url:)': 0.13; 'languages.': 0.15; 'client,': 0.16; 'foot': 0.16; 'pipes': 0.16; 'return,': 0.16; 'roy': 0.16; 'sorts': 0.16; 'tcp': 0.16; 'tcp,': 0.16; 'think?': 0.16; 'wrote:': 0.17; 'appears': 0.18; 'memory': 0.18; 'module': 0.19; 'written': 0.20; 'cc:2**0': 0.23; 'cc:no real name:2**0': 0.24; 'external': 0.24; 'cc:addr:python.org': 0.25; 'header:In-Reply-To:1': 0.25; 'looks': 0.26; 'message-id:@mail.gmail.com': 0.27; 'run': 0.28; 'convince': 0.29; 'servers.': 0.29; 'url:mailman': 0.29; 'objects': 0.29; 'usually': 0.30; 'received:209.85.215.46': 0.30; 'url:python': 0.32; 'url:listinfo': 0.32; 'instead,': 0.33; 'subject:data': 0.33; 'another': 0.33; 'received:google.com': 0.34; 'faster': 0.35; 'process,': 0.35; 'similar': 0.35; 'received:209.85': 0.35; 'something': 0.35; 'there': 0.35; 'but': 0.36; 'url:org': 0.36; 'child': 0.36; 'anything': 0.36; 'does': 0.37; 'option': 0.37; 'two': 0.37; 'communicate': 0.37; 'received:209': 0.37; 'subject:: ': 0.38; 'things': 0.38; 'instead': 0.39; 'takes': 0.39; 'notice': 0.39; 'little': 0.39; 'where': 0.40; 'header:Received:5': 0.40; 'url:mail': 0.40; 'think': 0.40; 'your': 0.60; 'most': 0.61; 'you.': 0.61; 'production': 0.63; 'worth': 0.63; 'effective': 0.63; 'details': 0.63; 'more': 0.63; 'boss': 0.65; 'smith': 0.71; 'connection.': 0.75; 'article': 0.78; 'difference.': 0.84; 'nagy': 0.84; 'url:kr': 0.84; 'imagine': 0.96; 'hand,': 0.97 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:to :cc:content-type; bh=LJbNITCif9p0GwQeleBm2S5G43R+t3lMQUVTdXvaGv8=; b=P263LQAqovkcbrNRSBA6dWoTFX/4+dIRVduip+/DGkX/5p6Ly8HuxDcfE3GW4uCdFe ZVCPB0zo72xXrGAGsg9u2iev8rWNX8Jj7rlFFeX8+gsjfZnn/JEDFxuyJ3WfZAMSnP4G 4RbRAw0KprqZr+baMxy5BPtfWyTK1Bu1eprlP4gx2dE2fcpudHJU+3u7VM7cNr2pk03m tbXX1u4M6H5IK1aLgh3THDVJ8t+xnQTKRf4PXbTvIsm9CB7B1YhFx43lcXIdse39MPfY ipx7hfLNlmpa8NLkPxY5srvqw360APIejoJ8XJYCOvtC72DxzbADpaxP2vNUMeF6fGo5 oJ3w== MIME-Version: 1.0 In-Reply-To: References: <5017EFB0.6080608@shopzeus.com> Date: Wed, 1 Aug 2012 14:25:02 +0100 Subject: Re: Pass data to a subprocess From: andrea crotti To: Roy Smith Content-Type: text/plain; charset=ISO-8859-1 Cc: python-list@python.org X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.12 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: 35 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1343827504 news.xs4all.nl 6881 [2001:888:2000:d::a6]:56146 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:26357 2012/8/1 Roy Smith : > In article , > Laszlo Nagy wrote: > >> Yes, I think that is correct. Instead of detaching a child process, you >> can create independent processes and use other frameworks for IPC. For >> example, Pyro. It is not as effective as multiprocessing.Queue, but in >> return, you will have the option to run your service across multiple >> servers. > > You might want to look at beanstalk (http://kr.github.com/beanstalkd/). > We've been using it in production for the better part of two years. At > a 30,000 foot level, it's an implementation of queues over named pipes > over TCP, but it takes care of a zillion little details for you. > > Setup is trivial, and there's clients for all sorts of languages. For a > Python client, go with beanstalkc (pybeanstalk appears to be > abandonware). >> >> The most effective IPC is usually through shared memory. But there is no >> OS independent standard Python module that can communicate over shared >> memory. > > It's true that shared memory is faster than serializing objects over a > TCP connection. On the other hand, it's hard to imagine anything > written in Python where you would notice the difference. > -- > http://mail.python.org/mailman/listinfo/python-list That does look nice and I would like to have something like that.. But since I have to convince my boss of another external dependency I think it might be worth to try out zeromq instead, which can also do similar things and looks more powerful, what do you think?