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7 .TH PBIND 1M "Feb 25, 2008"
9 pbind \- control and query bindings of processes or LWPs
13 \fBpbind\fR \fB-b\fR \fIprocessor_id\fR \fIpid\fR [\fI/lwpid\fR]...
18 \fBpbind\fR [\fB-q\fR] [\fIpid\fR [\fI/lwpid\fR]]...
23 \fBpbind\fR \fB-Q\fR [\fIprocessor_id\fR]...
28 \fBpbind\fR \fB-u\fR \fIpid\fR [\fI/lwpid\fR]...
33 \fBpbind\fR \fB-U\fR [\fIprocessor_id\fR]...
39 \fBpbind\fR controls and queries bindings of processes and LWPs (lightweight
40 processes) to processors. \fBpbind\fR can also remove processor bindings that
41 were previously established.
44 When an LWP is bound to a processor, it will be executed only by that processor
45 except when the LWP requires a resource that is provided only by another
46 processor. The binding is not exclusive, that is, the processor is free to
47 execute other LWPs as well.
50 Bindings are inherited, so new LWPs and processes created by a bound LWP will
51 have the same binding. Binding an interactive shell to a processor, for
52 example, binds all commands executed by the shell.
55 Superusers may bind or unbind any process or LWP, while other users can bind or
56 unbind any process or LWP for which they have permission to signal, that is,
57 any process that has the same effective user ID as the user.
61 The following options are supported:
65 \fB\fB-b\fR \fIprocessor_id\fR\fR
69 Binds all or a subset of the LWPs of the specified processes to the processor
70 \fIprocessor_id\fR. Specify \fIprocessor_id\fR as the processor \fBID\fR of the
71 processor to be controlled or queried. \fIprocessor_id\fR must be present and
72 on-line. Use the \fBpsrinfo\fR command to determine whether or not
73 \fIprocessor_id\fR is present and on-line. See \fBpsrinfo\fR(1M).
83 Displays the bindings of the specified processes or of all processes. If a
84 process is composed of multiple LWPs which have different bindings and the LWPs
85 are not explicitly specified, the bindings of only one of the bound LWPs will
86 be displayed. The bindings of a subset of LWPs can be displayed by appending
87 "/lwpids" to the process \fBID\fRs. Multiple LWPs may be selected using "-" and
88 "," delimiters. See EXAMPLES.
98 Displays the LWPs bound to the specified list of processors, or all LWPs with
99 processor bindings. For processes composed of multiple LWPs, the bindings of
100 individual LWPs will be displayed.
110 Removes the bindings of all or a subset of the LWPs of the specified processes,
111 allowing them to be executed on any on-line processor.
121 Removes the bindings of all LWPs bound to the specified list of processors, or
122 to any processor if no argument is specified.
128 The following operands are supported:
136 The process \fBID\fR of the process to be controlled or queried.
146 The set of LWP IDs of the specified process to be controlled or queried. The
147 syntax for selecting \fBLWP\fR \fBID\fRs is as follows:
151 2,3,4-8 LWP IDs 2, 3, and 4 through 8
152 -4 LWPs whose IDs are 4 or below
153 4- LWPs whose IDs are 4 or above
162 \fB\fIprocessor_id\fR\fR
166 The processor \fBID\fR of the processor to be controlled or queried.
171 \fBExample 1 \fRBinding Processes
174 The following example binds processes 204 and 223 to processor 2:
179 example% \fBpbind -b 2 204 223\fR
180 process id 204: was 2, now 2
181 process id 223: was 3, now 2
187 \fBExample 2 \fRUnbinding a Process
190 The following example unbinds process 204:
195 example% \fBpbind -u 204\fR
201 \fBExample 3 \fRQuerying Bindings
204 The following example queries bindings. It demonstrates that process 1 is bound
205 to processor 0, process 149 has at least one LWP bound to CPU3, and process 101
211 example% \fBpbind -q 1 149 101\fR
214 process id 101: not bound
220 \fBExample 4 \fRQuerying LWP Bindings
223 The following example queries bindings of LWPs. It demonstrates that LWP 1 of
224 process 149 is bound to CPU3, and LWP 2 of process 149 is not bound.
229 example% \fBpbind -q 149/1-2\fR
231 lwp id 149/2: not bound
237 \fBExample 5 \fRQuerying LWP Bindings for Processor 2:
240 The following example queries all LWPs bound to processor 2:
245 example% \fBpbind -Q 2\fR
255 The following exit values are returned:
263 Successful completion.
279 \fBpsradm\fR(1M), \fBpsrinfo\fR(1M), \fBpsrset\fR(1M), \fBprocessor_bind\fR(2),
280 \fBprocessor_info\fR(2), \fBsysconf\fR(3C), \fBattributes\fR(5)
285 \fB\fBpbind: cannot query pid 31: No such process\fR\fR
289 The process specified did not exist or has exited.
295 \fB\fBpbind: cannot bind pid 31: Not owner\fR\fR
299 The user does not have permission to bind the process.
305 \fB\fBpbind: cannot bind pid 31: Invalid argument\fR\fR
309 The specified processor is not on-line.