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.
SEE ALSO
pset(3),
cpuctl(8),
schedctl(8)
HISTORY
The
psrset command first appeared in
NetBSD
5.0.