11-26-2007
HP decided that it was too expensive to continue developing their own PA-RISC CPUs and collaborated with Intel on a replacement, based on the x86 architecture. The resultant chip is the Itanium.
The entire current range of HP UNIX systems are based on Itanium, from the smaller single (dual-core ) CPU entry level systems up to the aforementioned Superdome.
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LEARN ABOUT OPENSOLARIS
pset_create
pset_create(2) System Calls pset_create(2)
NAME
pset_create, pset_destroy, pset_assign - manage sets of processors
SYNOPSIS
#include <sys/pset.h>
int pset_create(psetid_t *newpset);
int pset_destroy(psetid_t pset);
int pset_assign(psetid_t pset, processorid_t cpu, psetid_t *opset);
DESCRIPTION
These functions control the creation and management of sets of processors. Processor sets allow a subset of the system's processors to be
set aside for exclusive use by specified LWPs and processes. The binding of LWPs and processes to processor sets is controlled by
pset_bind(2).
The pset_create() function creates an empty processor set that contains no processors. On successful return, newpset will contain the ID
of the new processor set.
The pset_destroy() function destroys the processor set pset, releasing its constituent processors and processes. If pset is PS_MYID, the
processor set to which the caller is bound is destroyed.
The pset_assign() function assigns the processor cpu to the processor set pset. A processor that has been assigned to a processor set will
run only LWPs and processes that have been explicitly bound to that processor set, unless another LWP requires a resource that is only
available on that processor.
On successful return, if opset is non-null, opset will contain the processor set ID of the former processor set of the processor.
If pset is PS_NONE, pset_assign() releases processor cpu from its current processor set.
If pset is PS_QUERY, pset_assign() makes no change to processor sets, but returns the current processor set ID of processor cpu in opset.
If pset is PS_MYID, processor cpu is assigned to the processor set to which the caller belongs. If the caller does not belong to a proces-
sor set, processor cpu is released from its current processor set.
These functions are restricted to privileged processes, except for pset_assign() when pset is PS_QUERY.
RETURN VALUES
Upon successful completion, these functions return 0. Otherwise, -1 is returned and errno is set to indicate the error.
ERRORS
These functions will fail if:
EBUSY The processor could not be moved to the specified processor set.
EFAULT The location pointed to by newpset was not writable by the user, or the location pointed to by opset was not NULL and not
writable by the user.
EINVAL The specified processor does not exist, the specified processor is not on-line, or an invalid processor set was specified.
ENOMEM There was insufficient space for pset_create to create a new processor set.
ENOTSUP The pools facility is active. See pooladm(1M) and pool_set_status(3POOL) for information about enabling and disabling the pools
facility.
EPERM The {PRIV_SYS_RES_CONFIG} privilege is not asserted in the effective set of the calling process.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Committed |
+-----------------------------+-----------------------------+
|MT-Level |Async-Signal-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
pooladm(1M), psradm(1M), psrinfo(1M), psrset(1M), p_online(2), processor_bind(2), pset_bind(2), pset_info(2), pool_set_status(3POOL),
pset_getloadavg(3C), attributes(5), privileges(5)
NOTES
The processor set type of PS_SYSTEM is no longer supported.
Processors with LWPs bound to them using processor_bind(2) cannot be assigned to a new processor set. If this is attempted, pset_assign()
will fail and set errno to EBUSY.
SunOS 5.11 22 Feb 2008 pset_create(2)