[986] in java-interest
Re: Maximum number of threads
daemon@ATHENA.MIT.EDU (Philip Craig)
Wed Aug 16 07:57:31 1995
From: Philip Craig <craigpa@gb.swissbank.com>
Date: Wed, 16 Aug 95 08:59:24 +0100
To: lindholm@scndprsn.Eng.Sun.COM (Tim Lindholm)
Cc: java-interest@java.sun.com
Reply-To: Philip Craig <craigpa@gb.swissbank.com>
> If anybody knows of relevant limits in likely native threads
> packages, or other relevant least common denominators,
> I'd be interested in hearing about them. We should make
> that info available to Java programmers.
Hi,
The documentation for Mach (used with NeXTStep, which perhaps could
be considered a "likely native threads package") states:
"The danger in creating a large number of threads is that the
kernel might run out of resources and panic. Usually, a task should
avoid creating more than about 200 threads."
Mach gives you functions to return the number of threads running,
and to set and get a limit beyond which thread creation fails. It
defaults to unlimited, but with the above caveat.
Hope this helps,
Philip Craig
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