Trailing-Edge
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PDP-10 Archives
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BB-BT99T-BB_1990
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10,7/system/sethpq.hlp
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SET HPQ Command
Function
The SET HPQ command allows privileged users to place their jobs
in a high-priority run queue. When your job is in a
high-priority run queue, you can obtain a faster response than in
the normal timesharing queues. The job remains in the specified
high-priority queue until one of the following occurs:
o You issue another SET HPQ command specifying a different
high-priority queue.
o You log out.
o Your program overrides the SET HPQ command by issuing an HPQ
monitor call with a different value.
If an HPQ monitor call overrides the command, the level specified
in the monitor call remains in effect until a RESET or EXIT
monitor call or another HPQ monitor call with a different value
is executed. When an EXIT or RESET monitor call is executed, the
job is returned to the high-priority queue specified in the last
SET HPQ command.
Format
SET HPQ n
Where: n is a decimal number from 0 to 15 indicating the
high-priority queue to be entered. When n is 0, the
queue is the normal timesharing queue. Queue numbers
from 1 to 15 are high-priority queues. The number of
high-priority queues is an installation parameter and
can be less than 15.
Associated Messages
If you are not privileged, the system responds with an error
message:
?NO PRIVS TO SET PRIORITY THAT HIGH
Characteristics
Does not destroy your core image.
Leaves your terminal at monitor level.
Requires LOGIN.
Restrictions
The privileges required for using this command are determined by
bits 6 through 9 of the privilege word, .GTPRV. These four bits
specify an octal number from 0-17, which is the highest
high-priority queue you can attain.
Example
You try to set your run queue to 4.
.SET HPQ 4<RET>
?NO PRIVS TO SET PRIORITY THAT HIGH
Your job is placed in high-priority queue number 2.
.SET HPQ 2<RET>
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