NAME
psrset
- control processor sets
SYNOPSIS
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 ...
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
NetBSD5.0.