On Apr 17, 2014, at 2:23 PM, Jurko Gospodnetić <jurko.gospodne...@pke.hr> wrote:
> Hi. > > On 17.4.2014. 19:57, Guido van Rossum wrote: >> On Thu, Apr 17, 2014 at 10:33 AM, Jurko Gospodnetić >> <jurko.gospodne...@pke.hr <mailto:jurko.gospodne...@pke.hr>> wrote: >> >> I would really love to have better startup times in production, >> >> What's your use case? I understand why startup time is important for Hg, >> but I'd like to understand what other situations occur frequently enough >> to worry about it. > > The first one that pops to mind is scripting when automating different > system administration tasks. > > When you automate something that ends up calling lots of different Python > scripts - the startup times add up. Yes, I know you can update the system so > that the scripts get called inside a single Python process, but that often > requires major refactoring, e.g.: > - you have to refactor those scripts to be importable while they were > originally prepared to be used as 'stand-alone executables' > - you either have to use Python as your external automation tool or you need > to implement some sort of a Python based tool runner daemon process > > Another example is the speed at which some automated test suits run that > need to call external Python scripts. Such suites often call thousands of > such scripts so their startup times add up to such numbers that Python gets a > bad rep. And shaving off unnecessarily wasted seconds or minutes in a test > suite is always good, as it speeds up the whole develop/test cycle. :-) pip invokes a ton of pythons in a subprocess in it’s test suite, and the “install from sdist” stuff tends to invoke 1-3 python’s per thing you install too. So any speed up there would make installing stuff faster. > > I've been in situations where I got a request to 'convert those Python > scripts to batch files so they would run faster'. :-) And, while I really > love Python as a development language, simple scripts implemented in it often > do make the system feel kind of sluggish. :-( > > And with that in mind, the effect of systems becoming 'even more sluggish' > when upgrading them to use the new 'Python 3' version, even if that slowdown > is not all startup related, often comes as an additional slap in the face. :-( > > Best regards, > Jurko Gospodnetić > > _______________________________________________ > Python-Dev mailing list > Python-Dev@python.org > https://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: > https://mail.python.org/mailman/options/python-dev/donald%40stufft.io ----------------- Donald Stufft PGP: 0x6E3CBCE93372DCFA // 7C6B 7C5D 5E2B 6356 A926 F04F 6E3C BCE9 3372 DCFA
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