psradm man page on SmartOS

Man page or keyword search:  
man Server   16655 pages
apropos Keyword Search (all sections)
Output format
SmartOS logo
[printable version]

PSRADM(1M)							    PSRADM(1M)

       psradm - change processor operational status

       psradm -f | -i | -n | -s [-v] [-F] processor_id

       psradm -a -f | -i | -n | -s [-v] [-F]

       The  psradm  utility  changes the operational status of processors. The
       legal states for the processor are on-line, off-line,  spare,  faulted,
       and no-intr.

       An  on-line processor processes LWPs (lightweight processes) and can be
       interrupted by I/O devices in the system.

       An off-line processor does not process any LWPs. Usually,  an  off-line
       processor  is  not  interruptible by I/O devices in the system. On some
       processors or under certain conditions, it might	 not  be  possible  to
       disable	interrupts  for an off-line processor. Thus, the actual effect
       of being off-line might vary from machine to machine.

       A spare processor does not process any LWPs. A spare processor  can  be
       brought	on-line,  off-line  or	to no-intr by a privileged user of the
       system or by the kernel in response to changes in the system state.

       A faulted processor is identified by the	 kernel,  which	 monitors  the
       behavior	 of  processors over time. A privileged user can set the state
       of a faulted processor to be on-line, off-line, spare or	 no-intr,  but
       must use the force option to do so.

       A  no-intr  processor  processes	 LWPs  but is not interruptible by I/O

       A processor can not be taken off-line or made spare if there  are  LWPs
       that  are  bound	 to  the  processor unless the additional -F option is
       used. The -F option removes processor  bindings	of  such  LWPs	before
       changing	 the processor's operational status. On some architectures, it
       might not be possible to take certain processors off-line or spare  if,
       for  example,  the system depends on some resource provided by the pro‐

       At least one processor in the system must be able to process  LWPs.  At
       least  one processor must also be able to be interrupted. Since an off-
       line or spare processor can be interruptible, it is possible to have an
       operational  system with one processor no-intr and all other processors
       off-line or spare but with one or more accepting interrupts.

       If any of the specified processors are powered off, psradm might	 power
       on one or more processors.

       Only  users  with  the PRIV_SYS_RES_CONFIG privilege can use the psradm

       The following options are supported:

	     Perform the action on all processors, or as many as possible.

	     Take the specified processors off-line.

	     Force the transition to the additional specified state.  Required
	     if	 one  or  more	of the specified processors was in the faulted
	     state. Set the specified processors to faulted, if no other tran‐
	     sition  option was specified. Forced transitions can only be made
	     to faulted, spare, or off-line states. Administrators are encour‐
	     aged to use the -Q option for pbind(1M) to find out which threads
	     will be affected by forced a processor state transition.

	     Set the specified processors no-intr.

	     Bring the specified processors on-line.

	     Make the specified processors spare.

	     Output a message giving the results of each attempted operation.

       The following operands are supported:

		       The processor ID of the processor to be set on-line  or
		       off-line, spare, or no-intr.

		       Specify	processor_id as an individual processor number
		       (for example, 3), multiple processor numbers  separated
		       by spaces (for example, 1 2 3), or a range of processor
		       numbers (for example, 1-4). It is also possible to com‐
		       bine  ranges and (individual or multiple) processor_ids
		       (for example, 1-3 5 7-8 9).

       Example 1 Setting Processors to off-line

       The following example sets processors 2 and 3 off-line:

	 % psradm -f 2 3

       Example 2 Setting Processors to no-intr

       The following example sets processors 1 and 2 no-intr:

	 % psradm -i 1 2

       Example 3 Setting Processors to spare

       The following example sets processors 1 and 2 spare, even if either  of
       the processors was in the faulted state:

	 % psradm -F -s 1 2

       Example 4 Setting All Processors on-line

	 % psradm -a -n

       Example 5 Forcing Processors to off-line

       The  following example sets processors 1 and 2 offline, and revokes the
       processor bindings from the processes bound to them:

	 % psradm -F -f 1 2

       The following exit values are returned:

	     Successful completion.

	     An error occurred.

		     Records logging processor status changes

       pbind(1M),  psrinfo(1M),	 psrset(1M),  p_online(2),  processor_bind(2),

       psradm: processor 4: Invalid argument

	   The specified processor does not exist in the configuration.

       psradm: processor 3: Device busy

	   The	specified  processor  could  not  be taken off-line because it
	   either has LWPs bound to it, is the last on-line processor  in  the
	   system,  or is needed by the system because it provides some essen‐
	   tial service.

       psradm: processor 3: Device busy

	   The specified processor could not be set no-intr because it is  the
	   last	 interruptible	processor  in the system, or or it is the only
	   processor in the system that can service interrupts needed  by  the

       psradm: processor 3: Device busy

	   The specified processor is powered off, and it cannot be powered on
	   because some platform-specific resource is unavailable.

       psradm: processor 0: Not owner

	   The user does not have permission to change processor status.

       psradm: processor 2: Operation not supported

	   The specified processor is powered off, and the platform  does  not
	   support power on of individual processors.

				 Feb 25, 2008			    PSRADM(1M)

List of man pages available for SmartOS

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
Vote for polarhome
Free Shell Accounts :: the biggest list on the net