From: "hms (Hal Spitz) via ruby-core" <ruby-core@ml.ruby-lang.org>
To: ruby-core@ml.ruby-lang.org
Cc: "hms (Hal Spitz)" <noreply@ruby-lang.org>
Subject: [ruby-core:119413] [Ruby master Bug#20779] Un-rescuable thread creation limit on Mac
Date: Wed, 02 Oct 2024 23:31:53 +0000 (UTC) [thread overview]
Message-ID: <redmine.issue-20779.20241002233153.54270@ruby-lang.org> (raw)
In-Reply-To: <redmine.issue-20779.20241002233153.54270@ruby-lang.org>
Issue #20779 has been reported by hms (Hal Spitz).
----------------------------------------
Bug #20779: Un-rescuable thread creation limit on Mac
https://bugs.ruby-lang.org/issues/20779
* Author: hms (Hal Spitz)
* Status: Open
* ruby -v: 3.3.5
* Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
Thread.new will hang the ruby process once past the OSX limit. It does not appear that's possible to trap and rescue failed thread creation.
It seems the Mac has a limit to the number of threads it supports and googling the issue suggests the limit has been known to change with hardware and OS releases. While I hit the thread creation limit due to a bug in my code and the number of threads that I was attempting to create (12,250+) is an unlikely use-case, I am hoping it would be possible to turn this into a rescuable error.
While I'm reporting this on 3.3.5, I have tested the issue and the inability to rescue back to 3.3.1.
(Thanks to @raels for being a great second set of eyes to make sure I wasn't doing anything goofy / wrong before making this report. Also, another callout and thanks to both @eregon and @bensheldon over at concurrent-ruby for the unbelievably quick and helpful response to my initial bug report over there).
---Files--------------------------------
hang.rb (713 Bytes)
--
https://bugs.ruby-lang.org/
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next parent reply other threads:[~2024-10-02 23:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-02 23:31 hms (Hal Spitz) via ruby-core [this message]
2024-12-23 18:46 ` [ruby-core:120381] " luke-gru (Luke Gruber) via ruby-core
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