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The number of thread per process

Posted on 1997-10-23
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Last Modified: 2013-12-27
How do I know the number of thread per process under
unix, for example Solaris or HPUX?
and Can I change the number of thread per process
according to environments?
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Question by:jhson
4 Comments
 

Expert Comment

by:dpodvaln
ID: 2007554
  In Unix each process have one thread.
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Author Comment

by:jhson
ID: 2007555
Originally in unix each process has one thread.
Each process can have many threads using thread package.
But, each process cannot have beyond the max number of thread because of Unix limitation.
I heard we can manage the max number of thread per process in
unix configuration.

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Accepted Solution

by:
rembo earned 100 total points
ID: 2007556

Run the 'sysdef' command will tell you the value of all
the tunable system parameters.  You can tune them in
the kernel.  Take a look at the config man page.

Hope that helps,

-Tony

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Expert Comment

by:jrg
ID: 2007557
I can only comment on the Solaris Implementation. The number of threads per process is unlimited in the Solaris Implementation and in the POSIX standard. I.E. you can make as many thread_create() calls as you like. (pthread_create() under POSIX). Since each thread creation take a small amount of the virtual memory stack (1MB by deafult) so the real limitation how much stack space you use.
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