STREAMS-UX Programmer's Guide (February 2007)

Differences Between STREAMS/UX and System V Release 4 STREAMS
The STREAMS/UX Scheduler
Appendix E
279
The STREAMS/UX Scheduler
The STREAMS/UX scheduler runs service routines that are scheduled by STREAMS/UX utilities such as
putq. The scheduler will run all scheduled service procedures before returning to user level. The scheduler is
a real time daemon that runs at priority 100. (A low priority number denotes a high priority. For example, a
priority number of 50 would be of higher priority than the number 100). STREAMS/UX applications need to
run at a lower priority (higher priority number) than the STREAMS/UX scheduler; otherwise service
procedures will not run before the scheduler returns to user level from the kernel.