sadcnt sets the number of STREAMS addressable devices and nautopush sets the number of STREAMS autopush entries. nautopush should be set to twice sadcnt. Whether or not these values need to be increased as above depends on the types of activity on the system.
RAM Tuneables
See the Memory/Swapping page for a discussion of parameters related to RAM and paging.
Disk I/O Tuneables
See the Disk I/O page for a full discussion of disk I/O-related tuneables.
IPC Tuneables
Check the IPC Tuning page for InterProcess Communication-related resource parameters.
File Descriptors
See the File Descriptors page for more discussion regarding tuning issues.
File descriptors are retired when the file is closed or the process terminates. Opens always choose the lowest-numbered file descriptor available. Available file descriptors are allocated as follows:
[color=red]rlim_fd_cur[/color]: It is dangerous to set this value higher than 256 due to limitations with the stdio library. If programs require more file descriptors, they should use setrlimit directly.
[color=red]rlim_fd_max[/color]: It is dangerous to set this value higher than 1024 due to limitations with select. If programs require more file descriptors, they should use setrlimit directly.
Misc Tuneables
[color=red]dump_cnt[/color]: Size of dumps.
[color=red]rstchown[/color]: Posix/restricted chown enabled (default=1)
[color=red]ngroups_max[/color]: Maximum number of supplementary groups per user (default=32).
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