Maximum number of processes that can be created on a system. Includes system and user processes. Any value entered in /etc/system is used in the computation of maxuprc.
Determining the size of the directory name lookup cache (if ncsize is not specified)
Allocating disk quota structures for UFS (if ndquot is not specified)
Verifying that the amount of memory used by configured system V semaphores does not exceed system limits
Configuring Hardware Address Translation resources for the sun4d, sun4m, and Intel platforms
10 + (16 x maxusers)
266 to value of maxpid
Compared to maxpid and set to maxpid if larger. On the sun4d and Intel platforms an additional check is made against a platform-specific value. max_nprocs is set to the smallest value in the triplet (max_nprocs, maxpid, platform value). Both platforms use 65,534 as the platform value.
Changing this parameter is one of the steps necessary to enable support for more than 30,000 processes on a system.
See max_nprocs (Pre-Solaris 8 Releases) for more information.