Path: csiph.com!usenet.pasdenom.info!news.albasani.net!newsfeed.freenet.ag!news2.euro.net!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 0.004 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'skip:[ 20': 0.03; 'subject:Python': 0.05; 'cpython': 0.05; 'startup': 0.05; 'expectation': 0.09; 'imported': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'terry': 0.09; 'url:peps': 0.09; '3.3.': 0.16; 'meanwhile': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'reedy': 0.16; 'url:speed': 0.16; 'url:dev': 0.17; 'jan': 0.18; 'module': 0.19; 'mostly': 0.20; 'trying': 0.21; 'needed.': 0.23; 'this:': 0.23; 'seems': 0.23; 'machine': 0.24; 'header:User-Agent:1': 0.26; 'am,': 0.27; 'header:X-Complaints-To:1': 0.28; 'actual': 0.28; '>>>>': 0.29; 'volunteers': 0.29; 'probably': 0.29; 'system,': 0.32; 'url:python': 0.32; 'getting': 0.33; 'to:addr:python-list': 0.33; 'another': 0.33; 'project': 0.34; 'done': 0.34; 'needed': 0.35; 'something': 0.35; 'there': 0.35; 'received:org': 0.36; 'but': 0.36; 'url:org': 0.36; 'does': 0.37; 'some': 0.38; 'sure': 0.38; 'instead': 0.39; 'to:addr:python.org': 0.39; 'notice': 0.39; 'build': 0.39; 'header:Received:5': 0.40; 'help': 0.40; 'further': 0.61; 'lower': 0.61; 'ever': 0.63; 'times': 0.63; 'more': 0.63; 'making': 0.64; 'real-world': 0.65; '8bit%:21': 0.69; 'building,': 0.71; '3.4': 0.84; 'benchmark': 0.84; 'difference.': 0.84; 'irrelevant': 0.84; 'received:fios.verizon.net': 0.84; 'reducing': 0.95 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Terry Reedy Subject: Python Speed Date: Wed, 27 Feb 2013 17:24:10 -0500 Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Gmane-NNTP-Posting-Host: pool-173-75-251-66.phlapa.fios.verizon.net User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130215 Thunderbird/17.0.3 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: 43 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1362003871 news.xs4all.nl 6933 [2001:888:2000:d::a6]:44591 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:40075 On 2/27/2013 3:21 AM, jmfauth hijacked yet another thread: > Some are building, some are destroying. We are still waiting for you to help build a better 3.3+, instead of=20 trying to 'destroy' it with mostly irrelevant cherry-picked benchmarks. > Py33 >>>> timeit.repeat("{1:'abc=C3=A9=C5=93=E2=82=AC'}") > [0.2573893570572636, 0.24261832285651508, 0.24259548003601594] On my win system, I get a lower time for this: [0.16579443757208878, 0.1475787649924598, 0.14970205670637426] > Py323 > timeit.repeat("{1:'abc=C3=A9=C5=93=E2=82=AC'}") > [0.11000708521282831, 0.0994753634273593, 0.09901023634051853] While I get the same time for 3.2.3. [0.11759353304428544, 0.09482448029000068, 0.09532802044164157] It seems that something about Jim's machine does not like 3.3. *nix will probably see even less of a difference. Times are in=20 microseconds, so few programs will ever notice the difference. In the meanwhile ... Effort was put into reducing startup time for 3.3=20 by making sure that every module imported during startup actual needed=20 to be imported, and into speeding up imports. The startup process is getting a deeper inspection for 3.4 http://python.org/dev/peps/pep-0432/ 'Simplifying the CPython startup sequence' with some expectation for further speedup. Also, a real-world benchmark project has been established. http://speed.python.org/ Some work has already been done to port benchmarks to 3.x, but I suspect = there is more to do and more volunteers needed. --=20 Terry Jan Reedy