[issue29877] compileall hangs when accessing urandom even if number of workers is 1

Change by INADA Naoki : -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker ___ ___

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

miss-islington added the comment: New changeset 879f5f3d9c1f5b66e2a080c712e2323e9c03d558 by Miss Islington (bot) in branch '3.6': bpo-29877: compileall: import ProcessPoolExecutor only when needed (GH-4856) https://github.com/python/cpython/commit/879f5f3d9c1f5b66e2a080c712e2323e9c03d558

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

miss-islington added the comment: New changeset 903a3e8d67b61594c0fa17fb201769ca924b38f8 by Miss Islington (bot) in branch '3.7': bpo-29877: compileall: import ProcessPoolExecutor only when needed (GH-4856) https://github.com/python/cpython/commit/903a3e8d67b61594c0fa17fb201769ca924b38f8

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

Change by miss-islington : -- pull_requests: +9939 ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe:

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

Change by miss-islington : -- pull_requests: +9938 ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe:

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

miss-islington added the comment: New changeset 1d817e4c8259f49602eefe9729743f6d9d748e8d by Miss Islington (bot) (Dustin Spicuzza) in branch 'master': bpo-29877: compileall: import ProcessPoolExecutor only when needed (GH-4856)

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

INADA Naoki added the comment: I am not sure PR 4856 is enhancement or bugfix. But I think it's worth enough to backport to 3.6 and 3.7. It caused a real UX problem. -- nosy: +inada.naoki ___ Python tracker

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

Dustin Spicuzza added the comment: Finally got around to looking at this. # cat /proc/sys/kernel/random/entropy_avail 183 .. ran python3 -c 'import os; os.getrandom(1, flags=os.GRND_NONBLOCK)' a few times, but didn't run into a hang. Seems like the entropy_avail

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

STINNER Victor added the comment: In kernel logs (look at dmesg), I found two messages: vstinner@apu$ journalctl -k|grep random déc. 14 23:10:28 apu kernel: random: fast init done déc. 14 23:10:32 apu kernel: random: crng init done Sadly, I don't know which one means

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

Dustin Spicuzza added the comment: I'm sure that the platform (a RT linux customized by National Instruments) has issues related to urandom, as this has reared it's ugly head with other PEP 525 related issues also: https://bugs.python.org/issue29208 I'll have to

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

Antoine Pitrou added the comment: Le 19/12/2017 à 15:50, STINNER Victor a écrit : > > Hum, it looks like an "embedded device", likely with no entropy source. If it does I/O (which it probably does, being used for robotics), it should certainly be able to extract entropy from

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

STINNER Victor added the comment: > Found on Python 3.6 on a low-resource platform (NI RoboRIO), ... Hum, it looks like an "embedded device", likely with no entropy source. To check if os.urandom() will block, try to call the following function in your main script:

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

Antoine Pitrou added the comment: So calling urandom() hangs on your device because there's not enough entropy? What OS is this running? Modern Linux, at least, should never block in urandom() (AFAIK). -- nosy: +christian.heimes, pitrou type: behavior -> resource

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

Change by Dustin Spicuzza : -- keywords: +patch pull_requests: +4745 stage: -> patch review ___ Python tracker ___

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

Changes by Berker Peksag : -- nosy: +Claudiu.Popa, brett.cannon ___ Python tracker ___

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

Changes by Dustin Spicuzza : -- type: -> behavior ___ Python tracker ___ ___

[issue29877] compileall hangs when accessing urandom even if number of workers is 1

Changes by Dustin Spicuzza : -- title: compileall fails with urandom error even if number of workers is 1 -> compileall hangs when accessing urandom even if number of workers is 1 ___ Python tracker