PSRSET(8)               NetBSD System Manager's Manual               PSRSET(8)

psrset -- control processor sets
psrset [setid ...] psrset -a setid cpuid ... psrset -b setid pid ... psrset -c [cpuid ...] psrset -d setid psrset -e setid command psrset -i [setid ...] psrset -p psrset -r cpuid ... psrset -u pid ...
The psrset command can be used to control and inspect processor sets. The system always contains at least one processor set: the default set. The default set must contain at least one online processor (CPU) at all times. Available options: -a Assign one or more processors (CPUs) to the set setid. In the current implementation, a CPU may only be present in one set. CPU IDs are as reported and used by the cpuctl(8) command. -b Bind one or more processes to the set setid. All LWPs within the processes will be affected. Bindings are inherited when new LWPs or processes are forked. However, setting a new binding on a parent process does not affect the bindings of its existing child processes. -c Create a new processor set. If successful, the ID of the new set will be printed. If a list of CPU IDs is provided, those CPUs will be assigned to the set upon creation. Otherwise, the set will be created empty. -d Delete the processor set specified by setid. Any LWPs bound to the set will be re-bound to the default processor set. -e Execute a command within the processor set specified by setid. -i List all processor sets. For each set, print the member CPUs. If psrset is run without any options, it behaves as if -i were given. -p List all CPUs. For each CPU, print the associated processor set. -r Remove a CPU from its current set, and return it back to the default processor set. -u Bind the specified processes to the system default processor set.
pset(3), cpuctl(8), schedctl(8)
The psrset command first appeared in NetBSD 5.0. NetBSD 5.0_RC4 September 23, 2008 NetBSD 5.0_RC4

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