Solaris Resource Manager 1.3 Reference Manual

rcapadm(1MSRM)

NAME

rcapadm- configure resource capping daemon

SYNOPSIS

rcapadm

-n

-E | -D

-m lnode | project

-i

interval=value

-c percent

DESCRIPTION

rcapadm allows the superuser 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.

OPTIONS

-n

Do not affect the running state of the resource capping daemon when enabling or disabling it.

-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 running.

-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.

-m lnode | project

Choose rcapd process collection mode. Two modes of operation are supported: lnode and project. In lnode mode, caps are defined through the lnode limit attribute rss.limit. In project mode, caps are defined through the project attribute rcap.max-rss, which is configured in the project(4) database. See rcapd(1MSRM) for more information.

-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 rate at which rcapd scans for new processes. By default, the scan rate is every 15 seconds. The minimum value is 1 second.

sample

The rate of process resident set size sampling. By default, the sample rate is every 5 seconds. The minimum value is 1 second.

report

The rate at which various paging statistics are updated by rcapd. These statistics can be viewed by using rcapstat(1SRM). By default, the reporting rate is every 5 seconds. When the rate is set to 0, statistics will not be updated.

Note -

Paging refers to the act of relocating portions of memory, called pages, to or from physical memory. rcapd pages out the most infrequently used pages.

config

The reconfiguration rate. At each reconfiguration event, rcapd checks its configuration file for updates, and scans lnode (limits) databases or project databases for new lnode or project caps, or new collections. By default, the reconfiguration rate is every 60 seconds. When the rate is set to 0, no periodic reconfiguration occurs, although the running daemon can still be reconfigured by sending it SIGHUP.

-c percent

Set the minimum physical memory utilization for memory cap enforcement. 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.

EXAMPLES

Example 1 Configuring the Resource Capping Daemon in `lnode` Mode With Strict Caps

# rcapadm -m lnode -E -i scan=15,sample=5,report=5,config=60

Example 2 Setting Resident Set Size Cap for the Lnode `oracle`

# /usr/srm/sbin/limadm set rss.limit=10G oracle

Example 3 Setting Resident Set Size Cap for the Project `oracle` in the Project Database

oracle:100::oracle,root::rcap.max-rss=10737418240

EXIT STATUS

The following exit values are returned:

0: Successful completion. The modifications to the current configuration 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
Architecture	SPARC
Availability	SUNWrcapu

NOTES

The command described in this man page is only available on SunOS 5.8.

SunOS 5.8 Last Revised 1 Nov 2002