[QNX hypervisor 2.2 user manual]9.3 CPU

stay VM Create a new vCPU.

One , grammar

cpu [options]*

Two , Options

partition name

If in Hypervisor Host Adaptive partition is implemented in the domain （APS）,vCPU Will run on Host Domain specific APS partition . If partition The options are not at the top ,vCPU The thread will run on qvm The partition where the process starts .

runmask cpu_number{,cpu_number}

Only allowed vCPU Run in the specified physical CPU or CPU（ To nuclear ）.CPU Number from 0 Start . There are no restrictions by default （ Unfixed ）

Assign the run mask to vCPU It means some important design choices . If allowed vCPU float （ The run mask is not set or contains one or more CPU）, be vCPU You can migrate .

On some systems , Migration is very useful , Because migration can be said vCPU Move to idle cpu Nuclear （ If the current running mask allows ）. however , Some real-time Guest, Will a vCP Assign to a core , This is not the same as other vCPU Sharing can improve real-time .

QNX Suggest , Use floating for the first time in your design vCPU, It can be moved as needed to restrict or prohibit migration .

sched priority [r|f|o]

sched

high_priority, low_priority, max_replacements, peplacement_period, initial_budgets

Used for setting up vCPU Scheduling priority and Scheduling Algorithm . The algorithm can be set optionally round-robin（r, round-robin scheduling ）, or