rcapadm(1M) System Administration Commands rcapadm(1M)NAMErcapadm - configure resource capping daemon
SYNOPSISrcapadm
rcapadm [ [-n] -E | -D]
[-i interval=value,...,interval=value] [-c percent]
[-z zonename -m maxvalue]
DESCRIPTION
The rcapadm command allows a user with the privileges described below
to configure various attributes of the resource capping daemon. If used
without arguments, rcapadm displays the current status of the resource
capping daemon if it has been configured. See rcapd(1M) for more
information.
In the current release of the Solaris operating environment, rcapadm is
available to users with all privileges and to users who have the
Process Management profile in their list of profiles. The System Admin‐
istrator role includes the Process Management profile.
OPTIONS-c percent
Set the minimum physical memory utilization for memory cap enforce‐
ment. Caps will not be enforced until the physical memory available
to processes is low. The percent value should be in the range 0 to
100. The minimum (and default) value is 0, which means that memory
caps are always enforced.
-D
Disable the resource capping daemon so that it will not be started
when the system is booted. Also stop the resource capping daemon
now, if the -n option is not specified and it is currently running.
-E
Enable the resource capping daemon so that it will be started each
time the system is booted. Also start the resource capping daemon
now, if the -n option is not specified and it is not currently run‐
ning.
-i interval=value,...,interval=value
Set intervals for various periodic operations performed by rcapd.
All intervals are specified in seconds. You can set the following
intervals:
scan The interval at which rcapd scans for new processes. The
default scan interval is every 15 seconds. The minimum
value is 1 second.
sample The interval of process resident set size sampling. The
default sample interval is every 5 seconds. The minimum
value is 1 second.
report The interval at which various paging statistics are
updated by rcapd, in seconds. These statistics can be
viewed by using rcapstat(1SRM). The default reporting
interval is every 5 seconds. When the interval is set to
0, statistics will not be updated.Note -
Paging refers to the act of relocating portions of mem‐
ory, called pages, to or from physical memory. rcapd
pages out the most infrequently used pages.
config The reconfiguration interval, in seconds. At each recon‐
figuration event, rcapd checks its configuration file for
updates, and scans the project databases for new project
caps. The default reconfiguration interval is every 60
seconds. The minimum interval is 0. When the interval is
set to 0, no periodic reconfiguration occurs, although
the running daemon can still be reconfigured by sending
it SIGHUP.
-m maxvalue
Used in conjunction with the -z option. Specifies a value for
rcap.max-rss, a dynamically-set cap on the usage of physical memory
for the zone specified by -z. You can apply a scale (K, M, G, T) to
the value you specify. K means kilobyte; M, megabyte; G, gigabyte;
and T, terabyte. For example, 100M is 100 megabytes.
-n
Do not affect the running state of the resource capping daemon when
enabling or disabling it.
-z zonename
Used in conjunction with the -m option. Specifies the zone for
which you are dynamically specifying a cap on physical memory usage
(using -m).
Note -
To set a persistent cap on memory usage within a zone, use zonecfg(1M).
EXAMPLES
Example 1 Configuring the Resource Capping Daemon with Immediate
Enforcement
# rcapadm-E -i scan=15,sample=5,report=5,config=60 -c 0
Example 2 Specifying a Resource Cap for a Zone
The command shown below specifies the maximum amount of memory that can
be consumed by a specified zone. Note that this value lasts only until
the next reboot. To set a persistent cap, use zonecfg(1M).
# rcapadm-z testzone -m 512M
EXIT STATUS
The following exit values are returned:
0 Successful completion. The modifications to the current configura‐
tion were valid and made successfully.
1 An error occurred. A fatal error occurred either in obtaining or
modifying the resource capping configuration.
2 Invalid command-line options were specified.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Availability │SUNWrcapu │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Evolving │
└─────────────────────────────┴─────────────────────────────┘
The -z and -m options are committed interfaces.
SEE ALSOrcapstat(1), rcapd(1M), zonecfg(1M), project(4), attributes(5),
zones(5)
"Physical Memory Control Using the Resource Capping Daemon" in System
Administration Guide: Solaris Containers-Resource Management, and
Solaris Zones
SunOS 5.10 18 Dec 2006 rcapadm(1M)
