Number of threads per process

Hi All,

Could you please advise how I can determine the value of maximum number of threads a process can support in Solaris. Is there any tunable parameter that can be used to control this. What are the default value of this in Solaris 9/10 ?

I tried looking at the 'sysdef' outputs, but could not get this.

I don't think there is a specific limit for that. It ends up being limited by other resources -- for example, virtual memory or swap space. Check out

http://www.princeton.edu/~unix/Solar...t/process.html

Also take a look at the man pages for ulimit and sysdef. I have on occasion had to set a higher ulimit because of multi-threaded applications that use files.

If your goal is to limit the number of threads a process (or group of processes) can support, there are tunables by tasks, projects and zones to do it:
task.max-lwps, project.max-lwps and zone.max-lwps.