Python startup time (was: Brainstorming for UDS-P)

Benjamin Drung bdrung at ubuntu.com
Mon Sep 26 23:08:01 UTC 2011


Am Montag, den 26.09.2011, 13:48 +0200 schrieb Sebastien Bacher:
> Le vendredi 23 septembre 2011 à 21:56 +0100, Allison Randal a écrit :
> > Hi all,
> > 
> > While we're all in the final preparations for Oneiric, it's round about
> > that time in the cycle to start thinking about plans for the next cycle.
> > What's on your mind?
> 
> Some desktopish suggestions:
> 
> - Boot and desktop performances (boot time, memory usage, power
> consumption)

Moving applications from Python 2 to Python 3 will increase the startup
time. I wrote a little script that runs n times hello world programs and
takes the time. That reveals a startup time increase of factor two
between Python 2 and 3. Running the hello world programs 100 times on my
system with an Core i5 takes following time (in seconds):

C:       0.04
D:       0.14
Haskell: 0.22
Bash:    0.23
CShell:  0.25
Perl:    0.27
PHP:     0.81
Python:  1.54
Python3: 3.22
Ruby:    0.28
Shell:   0.10
ZShell:  0.22
C#:      2.55
Java:    5.69

You can get your own measurements by running:

bzr branch lp:~bdrung/+junk/startup-time
cd startup-time
make install all

-- 
Benjamin Drung
Debian & Ubuntu Developer
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