STREAMS/UX for the HP 9000 Reference Manual

27
Detailed Product Information
Kernel Tunable Parameters
NSTRSCHED 0 Determines the number of streams scheduler daemons
(smpsched) running on a MP system. The default value is 0,
which indicates that Streams will determine the number of
daemons based on the number of processors in the system. The
number of MP streams schedulers created is as follows:
# of processors # of smpscheds created
--------------- ---------------------
2-4 1
5-8 2
8-16 3
16+ 4
If a tunable value > 0 is specified, then that value is used to
determine the number of MP schedulers (smpsched) created on a
MP system. The minimum value for this tunable is 0 and the
maximum is 32.
No MP schedulers will be created on a UP system.
Also, regardless of whether a system is MP or UP, there will
always be one UP Streams scheduler (supsched).
NOTE: This tunable is for use by specific HP products only. It
will likely be removed in future HP-UX releases.
NSTRBLKSCHED 2 Determines the number of blockable Streams scheduler daemons
(sblksched) running on a MP system. The default value is 2,
which means that two blockable Streams schedulers (sblksched)
will be created on a MP system.
If the tunable is set to 0, then no blockable Streams schedulers
will be created on a MP system. Also, on a UP system, no
blockable Streams schedulers will be created.
streamspipes 0 Determines if pipes are STREAMS-based. If set to zero, pipes
are not STREAMS-based. If non-zero, pipes are
STREAMS-based. The default is for pipes to not be
STREAMS-based.
NOTE: This tunable appears in /usr/conf/master.d/core-hpux.
Tunable Name
Default
Value
Use