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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"AMD64 Ubuntu Shared 3.x: python processes killed with SIGKILL by Linux Out-of-Memory (OOM), maybe related to test_asyncio","articleBody":"AMD64 Ubuntu Shared 3.x buildbot started to fail today:\r\n\r\n* https://buildbot.python.org/all/#/builders/506/builds/3401\r\n* https://buildbot.python.org/all/#/builders/506/builds/3404\r\n\r\nDavid Bolen, the buildbot owner, found logs of Linux OOM:\r\n\r\n```\r\nOct 18 11:27:39 buildbot-ubuntu kernel: [34420581.683539] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/user.slice,task=python,pid=18752,uid=1000\r\nOct 18 11:27:39 buildbot-ubuntu kernel: [34420581.683565] Out of memory: Killed process 18752 (python) total-vm:1381868kB, anon-rss:725500kB, file-rss:0kB, shmem-rss:0kB, UID:1000 pgtables:1748kB oom_score_adj:0\r\nOct 18 11:27:39 buildbot-ubuntu kernel: [34420581.795140] oom_reaper: reaped process 18752 (python), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB\r\n```\r\n\r\nand also 340 processes like ``python -c import time; time.sleep(100000000)``. These processes are likely spawned by ``test_kill_issue43884()`` of test_asyncio.test_subprocess.\r\n\r\nMaybe PR #32073 introduced a regression test_asyncio. My comment on the PR: https://github.com/python/cpython/pull/32073#issuecomment-1282634891\r\n\r\nEmails about this issue on buildbot-status mailing list: https://mail.python.org/archives/list/buildbot-status@python.org/thread/ZLG6D5L4SJVS6VHHCC6S2P4OZ63SCXO3/","author":{"url":"https://github.com/vstinner","@type":"Person","name":"vstinner"},"datePublished":"2022-10-18T16:52:30.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":23},"url":"https://github.com/98407/cpython/issues/98407"}