[issue36215] Should AppVeyor run compile Python in debug mode?

[Terry J. Reedy]

Terry J. Reedy <tjreedy at udel.edu> added the comment:

Testing with installed release builds is about twice as fast.

f:\dev\37>python -m test -ugui -j14  # Debug 32-bit 3.7
...
0:03:51 [412/416] test_tarfile passed (56 sec 7 ms) -- running: test_multiprocessing_spawn (1 min 46 sec)
0:04:14 [413/416] test_weakref passed (37 sec 771 ms) -- running: test_multiprocessing_spawn (2 min 8 sec), test_venv (40 sec 188 ms), test_zipfile (31 sec 718 ms)
0:04:37 [414/416] test_zipfile passed (53 sec 631 ms) -- running: test_multiprocessing_spawn (2 min 31 sec), test_venv (1 min 3 sec)
0:04:43 [415/416] test_venv passed (1 min 8 sec) -- running: test_multiprocessing_spawn (2 min 37 sec)
running: test_multiprocessing_spawn (3 min 7 sec)
0:05:31 [416/416] test_multiprocessing_spawn passed (3 min 25 sec)

f:\dev\37>py -3.7 -m test -ugui -j14  # Installed 64-bit 3.7
...
0:01:53 [412/416/2] test_urllib2_localnet passed -- running: test_multiprocessing_spawn (53 sec 953 ms), test_socket (39 sec 298 ms)
0:01:55 [413/416/2] test_socket passed (40 sec 929 ms) -- running: test_multiprocessing_spawn (55 sec 953 ms)
0:01:56 [414/416/2] test_zipfile passed -- running: test_multiprocessing_spawn (57 sec 141 ms)
0:02:11 [415/416/2] test_venv passed (37 sec 543 ms) -- running: test_multiprocessing_spawn (1 min 12 sec)
0:02:37 [416/416/2] test_multiprocessing_spawn passed (1 min 37 sec)

My memory is that other things being equal, 32 bit should be faster than 64, but I presume you know more than I do.

Doubling CI time would be painful.  How often are buildbot failure due to the build or test-arg differences, as opposed to system differences?

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nosy: +terry.reedy

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<https://bugs.python.org/issue36215>
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