[Python-Dev] buildbot's are needlessly compiling -O0 (original) (raw)

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.

Cheers, Nick.

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/AMD64%20Ubuntu%20LTS%203.x/builds/3224 http://buildbot.python.org/all/builders/ARMv7%203.x/builds/7 http://buildbot.python.org/all/builders/AMD64%20Snow%20Leop%203.x/builds/639 It should dramatically decrease the turnaround latency for buildbot results. -gps

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