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Submitted by:
lvo |
coolcommand
smtctl - how to control processor simultaneous multi-threading (SMT) in IBM AIX 5.3 |
Description
The smtctl command controls the enabling and disabling of processor simultaneous multi-threading mode.
# smtctl [ -m off | on [ -w boot | now ]]
where :
-m off : this option will set simultaneous multi-threading mode to disabled.
-m on : this option will set simultaneous multi-threading mode to enabled.
-w boot : this option makes the simultaneous multi-threading mode change effective on next and subsequent reboots if you run the bosboot command before the next system reboot.
-w now : this option makes the simultaneous multi-threading mode change immediately but will not persist across reboot. If neither the -w boot or the -w now options are specified, then the mode change is made immediately. It will persist across subsequent reboots if you run the bosboot command before the next system reboot.
To enable simultaneous multi-threading for the current boot cycle, type:
# smtctl -m on -w now
To view the current simultaneous multi-threading mode settings and processor information, type:
# smtctl
NOTE: For persistance of SMT configuration across reboots, type "bosboot -a&uot; before the next system reboot. |
Example
smtctl -m on -w now; bosboot -a |
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Wednesday May 22, 2013
