CPUCTL(8) NetBSD System Manager's Manual CPUCTL(8)
cpuctl -- program to control CPUs
cpuctl command [arguments]
The cpuctl command can be used to control and inspect the state of CPUs in the system. The first argument, command, specifies the action to take. Valid com- mands are: identify cpu Output information on the specified CPU's features and capabilities. Not available on all architectures. list For each CPU in the system, display the current state and time of the last state change. offline cpuno Set the specified CPU off line. Unbound LWPs (lightweight processes) will not be exe- cuted on the CPU while it is off line. Bound LWPs will continue to be executed on the CPU, and device inter- rupts routed to the CPU will continue to be handled. A future release of the system may allow device interrupts to be re-routed away from individual CPUs. At least one CPU in the system must remain on line. online cpuno Set the specified CPU on line, making it available to run unbound LWPs.
/dev/cpuctl control device
The cpuctl command first appeared in NetBSD 5.0. NetBSD 5.0 June 22, 2008 NetBSD 5.0
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