Pathway/XM System Management Manual

Managing a Pathway/XM Environment
Compaq NonStop™ Pathway/XM System Management Manual—426761-001
7-22
Redefining CPU Resources
Redefining CPU Resources
You can use the CONTROL NODE command to temporarily change CPU and CPU
weight assignments in a running Pathway/XM environment. You might want to do this,
for example, if you find that a particular processor is too heavily loaded compared to
other processors.
This command replaces the previously specified CPU profile for the NODE object. You
can specify only those CPU resources that were included in the PXMCFG configuration
for the NODE object. Any CPUs whose weights are set to zero in this profile are no
longer used for new processes.
For example, suppose your configuration includes the following commands to set the
CPU assignments for client nodes SERVER1 and SERVER2:
SET NODE CPUS (1:22, 3:31, 5:31, 6:8, 9:8)
ADD NODE SERVER1, SERVER2
The following PXMCOM CONTROL command sets new CPU and weight assignments
for these two NODE objects:
>> CONTROL NODE SERVER1, (CPUS 1:16, 3:12, 5:32, 6:32, 9:8)
>> CONTROL NODE SERVER2, (CPUS 1:25, 3:0, 5:50, 6:0, 9:25)
Table 7-1. Effect of Online Configuration Changes
Command
Type of
Information
Changed
Changes
Stored In
Preserved
Through
Warm Start?
Preserved
Through
Cool Start?
Preserved
Through
Cold Start?
CONTROL
NODE
CPU resources
to be used
SuperCTL
file, current
configuration
Yes Yes No
CONTROL
PATHMON
PATHMON
dump option
(ON|OFF)
PATHCTL
files
Yes No No
CONTROL
SERVER
Numerous
attributes of
distributed
server classes
SuperCTL
file, current
configuration
Yes Yes No
CONTROL
TCP
TCP dump
and statistics
options
(ON|OFF)
PATHCTL
files
Yes No No
CONTROL
TERM
Terminal
device or
process name
SuperCTL
file, initial
configuration
Yes Yes Yes
LOG1 and
LOG2
Location and
format for
message
logging
SuperCTL
file, current
configuration
Yes Yes No