1psrset(1M) System Administration Commands psrset(1M)
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6 psrset - creation and management of processor sets
7
9 psrset -a [-F] processor_set_id processor_id...
10 psrset -b processor_set_id pid [/lwpid]...
13 psrset -c [-F] [processor_id]...
16 psrset -d processor_set_id...
19 psrset -e processor_set_id command [argument(s)]
22 psrset -f processor_set_id
25 psrset [-i] [processor_set_id]...
28 psrset -n processor_set_id
31 psrset -p [processor_id]...
34 psrset [-q] [pid [/lwpid]]...
37 psrset -Q [processor_set_id]...
40 psrset -r [-F] processor_id...
43 psrset -u pid [/lwpid]...
46 psrset -U [processor_set_id]...
49
52 The psrset utility controls the management of processor sets. Processor
53 sets allow the binding of processes or LWPs to groups of processors,
54 rather than just a single processor. Processors assigned to processor
55 sets can run only LWPs that have been bound to that processor set.
56 This command cannot be used to modify processor disposition when pools
59 are enabled. Use pooladm(1M) and poolcfg(1M) to modify processor set
60 configuration through the resource pools facility.
61
63 The following options are supported:
64 -a Assign the specified processors to the specified processor set.
66 With the additional -F option, all LWPs bound to the specified
67 processors will be unbound prior to changing processor sets.
68 This option is restricted to users with the PRIV_SYS_RES_CONFIG
70 privilege.
71 -b Bind all or a subset of the LWPs of the specified processes to
74 the specified processor set.
75 LWPs bound to a processor set are restricted to run only on the
77 processors in that set. Processes can only be bound to non-empty
78 processor sets, that is, processor sets that have had processors
79 assigned to them.
80 Bindings are inherited, so new LWPs and processes created by a
82 bound LWP have the same binding. Binding an interactive shell to
83 a processor, for example, binds all commands executed by the
84 shell.
85 This option is restricted to users with the PRIV_SYS_RES_CONFIG
87 privilege.
88 -c Create a new processor set and displays the new processor set ID.
91 With the additional -F option, all LWPs bound to the specified
92 processors will be unbound prior to assigning them to the proces‐
93 sor set being created.
94 If a list of processors is given, it also attempts to assign
96 those processors to the processor set. If this succeeds, the pro‐
97 cessors are idle until LWPs are bound to the processor set. This
98 option is restricted to users with the PRIV_SYS_RES_CONFIG privi‐
99 lege.
100 Only a limited number of processor sets can be active (created
102 and not destroyed) at a given time. This limit is always be
103 greater than the number of processors in the system. If the -c
104 option is used when the maximum number of processor sets is
105 already active, the command fails.
106 The following format is used for the first line of output of the
108 -c option when the LC_MESSAGES locale category specifies the "C"
109 locale. In other locales, the strings created, processor, and set
110 can be replaced with more appropriate strings corresponding to
111 the locale.
112 "created processor set %d\n" processor set ID
114 -d Remove the specified processor set, releasing all processors and
119 processes associated with it.
120 This option is restricted to users with the PRIV_SYS_RES_CONFIG
122 privilege.
123 -e Execute a command (with optional arguments) in the specified pro‐
126 cessor set.
127 The command process and any child processes are executed only by
129 processors in the processor set.
130 This option is restricted to users with the PRIV_SYS_RES_CONFIG
132 privilege.
133 -f Disables interrupts for all processors within the specified pro‐
136 cessor set. See psradm(1M).
137 If some processors in the set cannot have their interrupts dis‐
139 abled, the other processors still have their interrupts disabled,
140 and the command reports an error and return non-zero exit status.
141 This option is restricted to users with the PRIV_SYS_RES_CONFIG
143 privilege.
144 -F Forces the specified processor set operation by unbinding all
147 threads bound to the specified processor. Only the -a or the -r
148 option can be used in combination with this option. Administra‐
149 tors are encouraged to use the -Q option for pbind(1M) to find
150 out which threads will be affected by such operation.
151 -i Display a list of processors assigned to each named processor
154 set. If no argument is given, a list of all processor sets and
155 the processors assigned to them is displayed. This is also the
156 default operation if the psrset command is not given an option.
157 -n Enable interrupts for all processors within the specified proces‐
160 sor set. See psradm(1M).
161 This option is restricted to users with the PRIV_SYS_RES_CONFIG
163 privilege.
164 -p Display the processor set assignments for the specified list of
167 processors. If no argument is given, the processor set assign‐
168 ments for all processors in the system is given.
169 -q Display the processor set bindings of the specified processes or
172 of all processes. If a process is composed of multiple LWPs which
173 have different bindings and the LWPs are not explicitly speci‐
174 fied, the bindings of only one of the bound LWPs is displayed.
175 The bindings of a subset of LWPs can be displayed by appending
176 "/lwpids" to the process IDs. Multiple LWPs may be selected using
177 "-" and "," delimiters. See EXAMPLES.
178 -Q Display the LWPs bound to the specified list of processor sets,
181 or all LWPs with processor set bindings.
182 -r Remove a list of processors from their current processor sets.
185 Processors that are removed return to the general pool of proces‐
186 sors.
187 Processors with LWPs bound to them using pbind(1M) can be
189 assigned to or removed from processor sets using the -F option.
190 This option is restricted to users with the PRIV_SYS_RES_CONFIG
192 privilege.
193 -u Remove the processor set bindings of a subset or all the LWPs of
196 the specified processes, allowing them to be executed on any on-
197 line processor if they are not bound to individual processors
198 through pbind.
199 Users with the PRIV_SYS_RES_CONFIG privilege can unbind any
201 process or LWP from any active processor set. Other users can
202 unbind processes and LWPs from processor sets that do not have
203 the PSET_NOESCAPE attribute set. In addition, the user must have
204 permission to control the affected processes; the real or effec‐
205 tive user ID of the user must match the real or saved user ID of
206 the target processes.
207 -U Removes the bindings of all LWPs bound to the specified list of
210 processor sets, or to any processor set if no argument is speci‐
211 fied.
212
215 The following operands are supported:
216 pid Specify pid as a process ID.
218 lwpid The set of LWPIDs of the specified process to be
221 controlled or queried. The syntax for selecting LWP
222 IDs is as follows:
223 2,3,4-8 LWP IDs 2, 3, and 4 through 8
225 -4 LWPs whose IDs are 4 or below
226 4- LWPs whose IDs are 4 or above
227 processor_id Specify processor_id as an individual processor
231 number (for example, 3), multiple processor numbers
232 separated by spaces (for example, 1 2 3), or a
233 range of processor numbers (for example, 1-4). It
234 is also possible to combine ranges and (individual
235 or multiple) processor_ids (for example, 1-3 5 7-8
236 9).
237 processor_set_id Specify processor_set_id as a processor set ID.
240
243 The following exit values are returned:
244 0 Successful completion.
246 non-0 An error occurred.
249
252 See attributes(5) for descriptions of the following attributes:
253 ┌─────────────────────────────┬─────────────────────────────┐
258 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
259 ├─────────────────────────────┼─────────────────────────────┤
260 │Availability │SUNWcsu │
261 ├─────────────────────────────┼─────────────────────────────┤
262 │Stability Level │Stable │
263 └─────────────────────────────┴─────────────────────────────┘
264
266 pbind(1M), pooladm(1M), poolcfg(1M), psradm(1M), psrinfo(1M), proces‐
267 sor_bind(2), processor_info(2), pset_bind(2), pset_create(2),
268 pset_info(2), sysconf(3C), libpool(3LIB), attributes(5), privileges(5)
269
271 The following output indicates that the specified process did not exist
272 or has exited:
273 psrset: cannot query pid 31: No such process
275 The following output indicates that the user does not have permission
280 to bind the process:
281 psrset: cannot bind pid 31: Not owner
283 The following output indicates that the user does not have permission
288 to assign the processor:
289 psrset: cannot assign processor 4: Not owner
291 The following output indicates that the specified processor is not on-
296 line, or the specified processor does not exist.
297 psrset: cannot assign processor 8: Invalid argument
299 The following output indicates that an LWP in the specified process is
304 bound to a processor and cannot be bound to a processor set that does
305 not include that processor:
306 psrset: cannot bind pid 67: Device busy
308 The following output indicates that the specified processor could not
313 be added to the processor set. This can be due to bound LWPs on that
314 processor, or because that processor cannot be combined in the same
315 processor set with other processors in that set, or because the proces‐
316 sor is the last one in its current processor set:
317 psrset: cannot assign processor 7: Device busy
319 The following output indicates that the specified processor set does
324 not exist:
325 psrset: cannot execute in processor set 8: Invalid argument
327 The following output indicates that the maximum number of processor
332 sets allowed in the system is already active:
333 psrset: cannot create processor set: Not enough space
335 The following output indicates that the pools facility is active.
340 psrset: cannot assign processor 7: Operation not supported
342 psrset: cannot bind pid 31: Operation not supported
343 psrset: cannot bind pid 31: Operation not supported
344 psrset: could not create processor set: Operation not supported
345 psrset: could not remove processor set 1: Operation not supported
346 psrset: cannot exec in processor set 1: Operation not supported
347 psrset: cannot remove processor 7: Operation not supported
348 psrset: cannot unbind pid 31: Operation not supported
349SunOS 5.11 25 Feb 2008 psrset(1M)