[Python-Dev] buildbot's are needlessly compiling -O0

Nick Coghlan ncoghlan at gmail.com
Sun Nov 24 10:43:18 CET 2013

On 24 Nov 2013 17:15, "Gregory P. Smith" <greg at krypto.org> wrote:
> our buildbots are setup to configure --with-pydebug which also
unfortunately causes them to compile with -O0... this results in a python
binary that is excruciatingly slow and makes the entire test suite run take
a long time.
> given that nobody is ever going to run a gdb or another debugger on the
buildbot generated transient binaries themselves how about we speed all of
the buildbot's up by adding CFLAGS=-O2 to the configure command line?

The main problem is that doing so would disable test_gdb. Humans don't run
gdb on those binaries, but the test suite does.

I agree it would be nice to figure out a way to run most of the tests on an
optimised build, though.


> Sure, the compile step will take a bit longer but that is dwarfed by the
test time as it is:
> http://buildbot.python.org/all/builders/ARMv7%203.x/builds/7
> It should dramatically decrease the turnaround latency for buildbot
> -gps
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