intctl.1m (2010 09)

i
intctl(1M) intctl(1M)
NOTE: Refer to this section of the configuration file for drivers that are currently not supported while
balancing interrupts.
5. INTCTL_DEFAULT_ALGO
The line that follows INTCTL_DEFAULT_ALGO
specifies the default algorithm to be used while
balancing interrupts (when
-a is not used). The supported algorithms are
driver_weight and
round_robin.
The -a algorithm option can be used to change the algorithm temporarily.
Example:
INTCTL_DEFAULT_ALGO
driver_weight
6. INTCTL_BALANCE_TRIGGER
The line that follows INTCTL_BALANCE_TRIGGER
specifies the trigger for balancing of interrupts
and is expected to be of the form balance_on_cpu distribute_to_cpu. balance_on_cpu is an integer that
specifies the minimum percentage of number of available CPUs that should be handling the inter-
rupts. distribute_to_cpu is an integer that specifies the percentage of number of available CPUs that
can handle interrupts after balancing interrupts.
If the percentage of number of available CPUs handling the interrupts is less than the
balance_on_cpu, then balancing of interrupts is performed and interrupts are distributed across
distribute_to_cpu percentage of CPUs. Both values should be in the range 0-100 and balance_on_cpu
should be smaller than distribute_to_cpu.
NOTE: If WLM (Work Load Manager) is configured to load balance across partitions by migrating
CPUs, HP recommends that distribute_to_cpu should not be set to more than 75. That is, it should be
set to 75 or less.
The
-o trig:balance_on_cpu:distribute_to_cpu
option can be used to override this setting tem-
porarily.
Example:
INTCTL_BALANCE_TRIGGER
60 80
RETURN VALUE
Exit values are:
0 Successful completion.
>0 An error condition occurred.
EXAMPLES
Display information about all interface cards which belong to the class
lan:
intctl -C lan
Display the interrupt information of the card with hardware path 0/4/0/0/5/0:
intctl -H 0/4/0/0/5/0
Display interrupt information of all the interface cards under the path, 0/4:
intctl -H 0/4
Display interrupt information of all interface cards under the hardware path 0/4 and which belong to
class lan:
intctl -C lan -H 0/4
Display interrupt information about the CPU with CPU ID 3:
intctl -c 3
HP-UX 11i Version 3: September 2010 − 9 − Hewlett-Packard Company 9