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. :-)
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
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