STREAMS-UX Programmer's Guide (February 2007)

STREAMS Kernel Tunable Parameters
streampipes
Appendix H
308
streampipes
Forces all pipes to be STREAMS-based.
Values
Failsafe
0
Default
0
Allowed
0 - 2147483647
Recommended
0
Description
This tunable determines the type of pipe that is created by the pipe() system call. If set to the default value
of zero, all pipes created by pipe() are normal HP-UX file-system pipes. If the value is non-zero, pipe()
creates STREAMS-based pipes, and STREAMS modules can be pushed onto the resulting stream.
If this tunable is set to a non-zero value, the pipemod and pipedev module and driver must be configured in
/stand/system.
Who is Expected to Change This Tunable?
Any customer.
Restrictions on Changing
Changes to this tunable take effect at the next reboot.
When Should This Tunable be Switched On?
If the customer uses applications that require STREAMS-based pipes, this tunable should be switched on.
What are the Side Effects of Switching On This Tunable?
STREAMS-based pipes performance may differ from normal file system pipes.
When Should This Tunable be Switched Off?
If the customer does not need the STREAMS-based pipes, this tunable should