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PSRSET(8) |
System Manager's Manual |
PSRSET(8) |
NAME
psrset — control processor sets
SYNOPSIS
|
psrset |
-a setid cpuid ... |
DESCRIPTION
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.
HISTORY
The psrset command first appeared in NetBSD 5.0.
