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This section contains procedures for configuring the resource capping daemon with rcapadm. See rcapd Configuration and the rcapadm(1M) man page for more information. Using the rcapadm to specify a temporary resource cap for a zone is also covered.
If used without arguments, rcapadm displays the current status of the resource capping daemon if it has been configured.
Caps can be configured so that they will not be enforced until the physical memory available to processes is low. See Memory Cap Enforcement Threshold for more information.
The minimum (and default) value is 0, which means that memory caps are always enforced. To set a different minimum, follow this procedure.
# rcapadm -c percent
percent is in the range 0 to 100. Higher values are less restrictive. A higher value means capped project workloads can execute without having caps enforced until the system's memory utilization exceeds this threshold.
To display the current physical memory utilization and the cap enforcement threshold, see Reporting Memory Utilization and the Memory Cap Enforcement Threshold.
rcapd Operation Intervals contains information about the intervals for the periodic operations performed by rcapd. To set operation intervals using rcapadm, follow this procedure.
# rcapadm -i interval=value,...,interval=value
Note - All interval values are specified in seconds.
Turn on resource capping using the svcadm command.
# svcadm enable rcap
Enable the resource capping daemon so that it will be started now and also be started each time the system is booted:
# rcapadm -E
Enable the resource capping daemon at boot without starting it now by also specifying the -n option:
# rcapadm -n -E
There are three ways to disable resource capping on your system.
# svcadm disable rcap
# rcapadm -D
# rcapadm -n -D
Tip - Disabling the Resource Capping Daemon Safely
Use rcapadm -D to safely disable rcapd. If the daemon is killed (see the kill(1) man page), processes might be left in a stopped state and need to be manually restarted. To resume a process running, use the prun command. See the prun(1) man page for more information.
This procedure is use to allocate the maximum amount of memory that can be consumed by a specified zone. This value lasts only until the next reboot. To set a persistent cap, use the zonecfg command.