The number of thread per process

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?
jhsonAsked:
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dpodvalnCommented:
  In Unix each process have one thread.
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jhsonAuthor Commented:
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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remboCommented:

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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jrgCommented:
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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