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Re: Thread-ID - how much could be?

References <20140911193018.GA24416@arxnet.hu> <lusua3$a4t$1@ger.gmane.org> <mailman.13944.1410471154.18130.python-list@python.org> <54124c95$0$29991$c3e8da3$5496439d@news.astraweb.com>
Date 2014-09-11 20:38 -0500
Subject Re: Thread-ID - how much could be?
From Skip Montanaro <skip@pobox.com>
Newsgroups comp.lang.python
Message-ID <mailman.13951.1410485934.18130.python-list@python.org> (permalink)

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On Thu, Sep 11, 2014 at 8:29 PM, Steven D'Aprano
<steve+comp.lang.python@pearwood.info> wrote:
> Suppose you somehow managed to create 9223372036854775807 threads. If your
> computer has 16 GB of RAM available, that means that at most each thread
> can use:
>
> py> 16*1024*1024*1024/9223372036854775807
> 1.862645149230957e-09
>
> bytes.

Doesn't that calculation assume that they all have to be alive at the
same time? (Maybe I missed it in earlier posts, but I don't think the
OP indicated they'd have to all be active.)

That said, I think the OP should probably be worrying about other ways
his program could fail besides overflowing some nonexistent max thread
id. :-)

Skip

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Thread

Re: Thread-ID - how much could be? Ervin Hegedüs <airween@gmail.com> - 2014-09-11 23:32 +0200
  Re: Thread-ID - how much could be? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-09-12 11:29 +1000
    Re: Thread-ID - how much could be? Chris Angelico <rosuav@gmail.com> - 2014-09-12 11:49 +1000
    Re: Thread-ID - how much could be? Skip Montanaro <skip@pobox.com> - 2014-09-11 20:38 -0500
    Re: Thread-ID - how much could be? Cameron Simpson <cs@zip.com.au> - 2014-09-12 13:41 +1000
    Re: Thread-ID - how much could be? Chris Angelico <rosuav@gmail.com> - 2014-09-12 15:41 +1000
    Re: Thread-ID - how much could be? Ervin Hegedüs <airween@gmail.com> - 2014-09-12 08:30 +0200
    Re: Thread-ID - how much could be? dieter <dieter@handshake.de> - 2014-09-13 08:56 +0200
    Re: Thread-ID - how much could be? Peter Otten <__peter__@web.de> - 2014-09-13 09:48 +0200
    Re: Thread-ID - how much could be? Martin Skjöldebrand <shieldfire@gmail.com> - 2014-09-13 12:09 +0200
    Re: Thread-ID - how much could be? Ervin Hegedüs <airween@gmail.com> - 2014-09-13 12:32 +0200
  Re: Thread-ID - how much could be? Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2014-09-16 10:53 +0200

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