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zs_pset(3zonestat)
Zones Statistics Library Functions zs_pset(3ZONESTAT)
NAME
zs_pset, zs_pset_list, zs_pset_walk, zs_pset_property,
zs_pset_total_time, zs_pset_total_cpus, zs_pset_used_time,
zs_pset_used_cpus, zs_pset_used_pct, zs_pset_stolen_all_time,
zs_pset_stolen_all_cpus, zs_pset_stolen_all_pct, zs_pset_stolen_time,
zs_pset_stolen_cpus, zs_pset_stolen_pct, zs_pset_stolen_zones_time,
zs_pset_stolen_zones_cpus, zs_pset_stolen_zones_pct - libzonestat pset
accessor methods
SYNOPSIS
cc [ flag ... ] file... -lzonestat [ library ... ]
#include <zonestat.h>
int zs_pset_list(zs_usage_t usage, zs_pset_t *psetlist, int num);
zs_pset_t zs_pset_walk(zs_usage_t usage, zs_pset_t pset);
zs_property_t zs_pset_property(zs_pset_t pset, zs_pset_property_t prop);
void zs_pset_total_time(zs_pset_t pset, timestruc_t *ts);
uint64_t zs_pset_total_cpus(zs_pset_t pset);
void zs_pset_used_time(zs_pset_t pset, zs_user_t user, timestruc_t *ts);
uint64_t zs_pset_used_cpus(zs_pset_t pset, zs_user_t user);
uint_t zs_pset_used_pct(zs_pset_t pset, zs_user_t user);
void zs_pset_stolen_all_time(zs_pset_t pset, timestruc_t *ts);
uint64_t zs_pset_stolen_all_cpus(zs_pset_t pset);
uint_t zs_pset_stolen_all_pct(zs_pset_t pset);
void zs_pset_stolen_time(zs_pset_t pset, timestruc_t *ts);
uint64_t zs_pset_stolen_cpus(zs_pset_t pset);
uint_t zs_pset_stolen_pct(zs_pset_t pset);
void zs_pset_stolen_zones_time(zs_pset_t pset, timestruc_t *ts);
uint64_t zs_pset_stolen_zones_cpus(zs_pset_t pset);
uint_t zs_pset_stolen_zones_pct(zs_pset_t pset);
DESCRIPTION
These functions are used to access the processor sets (psets) in the
usage object. These psets are the psets which existed at the time when
the zs_usage_read was called, and returned the usage object.
By default, the system has a single processor set which contains all
cpus. Processor sets can be created by resource pools (pooladm(8)), the
psrset(8) command, and by the zonecfg(8) dedicated cpu resource.
The zs_pset_list() function returns the number of zs_pset_t objects
contained within usage. If psetlist is non-NULL, the psetlist array
will be filled with up to num zs_pset_t objects. The psetlist array
must be first allocated by the caller. The first pset returned in the
array will always be the default pset. The remaining pset will be in
alphanumeric ordered by pset name.
The zs_pset_walk() function walks the psets contained in usage. If pset
is NULL, the first pset is returned. The first pset is always the
default pset. Otherwise, the psets are returned in alphanumeric order.
NULL will be returned if there are no more psets.
The zs_pset_property() function will return the prop property of a
pset. See libzonestat(3LIB) for a description of the ZS_PSET_PROP_*
property codes.
The zs_pset_total_time() function sets ts to the total cpu time that
has been available in pset. For example, if a pset has 2 online cpus,
and zs_open as called 30 seconds before zs_usage_read, then the total
time available in the pset is 60 seconds. ts must be allocated by the
caller.
The zs_pset_total_cpus() function returns the number of online cpus in
pset * 100. For instance, if the number of online cpus is 4, the value
returned will be 400.
The zs_pset_used_time() function sets ts to the total cpu time that has
been used in pset, starting at zero from the point when zs_open was
first called.
The zs_pset_used_cpus() function returns quantity of cpus used by user.
The value returned is the number of cpus used * 100. For instance, if
user ZS_USER_ZONES (which represents total pset usage by all zones) has
used 2.5 cpus worth of cpu time, then the value returned is 250.
The uint_t zs_pset_used_pct() function returns the percentage of cpu
time used by user. The value returned is the percentage * 100. For
example, if user ZS_USER_ALL (representing total cpu usage) is 50%,
then the value returned will be 5000.
All ZS_USER_* user codes are described in the libzonestat(3LIB) manual
page.
The zs_pset_stolen_all_time() function sets ts to the sum of the time
stolen from the pset and time stolen from all the zones bound to the
pset. For more information about stolen time, see solaris-kz(7).
The zs_pset_stolen_all_cpus() function returns the sum of number of
cpus stolen from the pset with number of cpus stolen from the zones
bound to the pset.
The zs_pset_stolen_all_pct() function returns the percentage of cpu
time stolen from the pset and all its zones.
The zs_pset_stolen_time() function sets ts to the time stolen from the
pset. Stolen time is supported only when running inside a supported
zone brand. If stolen time is not supported by the current system, ts
is set to a zero structure.
The zs_pset_stolen_cpus() function returns cpus stolen from the pset.
If the current system does not support stolen time, a special value of
ZS_LIMIT_NONE is returned.
The zs_pset_stolen_pct() function returns percentage of time stolen
from the pset. If stolen time is not supported by the current system,
special value of ZS_PCT_NONE is returned.
The zs_pset_stolen_zones_time() function sets ts to the total sum of
time stolen from the zones bound to the pset.
The zs_pset_stolen_zones_cpus() function returns cpus stolen from the
zones bound to the pset.
The zs_pset_stolen_zones_pct() function returns percentage of time
stolen from the zones bound to the pset.
RETURN VALUES
See Description.
ERRORS
If a zs_pset_*() function is called with an invalid user code, the
function will abort with abort(3C).
EXAMPLES
Example 1 Retrieve information about all psets in a usage object.
The following example traverses all psets in a usage object, retrieving
information about each pset.
#include <zonestat.h>
...
extern zs_usage_t usage; /* assume returned by zs_usage_read() */
...
zs_pset_t pset;
zs_property_t prop;
char * psetname;
uint64_t online;
uint64_t used;
uint64_t stolen;
for (pset = zs_pset_first(usage); pset != NULL;
pset = zs_pset_next(usage, pset)) {
/* Get psetname */
prop = zs_pset_property(pset, ZS_PSET_PROP_NAME);
psetname = strdup(zs_property_string(prop)));
/*
* Get number of online cpus, quantity of cpu used, and time
* stolen from the pset, all in number of cpus * 100.
*/
online = zs_pset_total_cpus(pset);
used = zs_pset_used_cpus(pset, ZS_USER_ALL);
stolen = zs_pset_stolen_cpus(pset);
}
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Interface StabilityCommitted _ MT-LevelSafe
SEE ALSO
zonestat(1), abort(3C), libpool(3LIB), libzonestat(3LIB), zs_open(3ZON‐
ESTAT), zs_property(3ZONESTAT), zs_pset_zone(3ZONESTAT),
zs_resource(3ZONESTAT), zs_usage(3ZONESTAT), zs_zone(3ZONESTAT),
attributes(7), resource-controls(7), pooladm(8), psrset(8), rcapadm(8),
swap(8), zoneadm(8), zonestatd(8)
Oracle Solaris 11.4 13 Nov 2020 zs_pset(3ZONESTAT)