svcadm(1M)을 검색하려면 섹션에서 1M 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
rcapd(8)
System Administration Commands rcapd(8)
NAME
rcapd - resource cap enforcement daemon
SYNOPSIS
rcapd [-d]
DESCRIPTION
The rcapd daemon enforces resource caps on collections of processes.
Per-project and per-zone physical memory caps are supported. For infor‐
mation about projects, see project(5). For zones information, see
zones(7)
When the resident set size (RSS) of a collection of processes exceeds
its cap, rcapd takes action and reduces the RSS of the collection.
The virtual memory system divides physical memory into segments known
as pages. To read data from a file into memory, the virtual memory sys‐
tem reads in individual pages. To reduce resource consumption, the dae‐
mon can page out, or relocate, infrequently used pages to an area out‐
side of physical memory.
In the project file, caps are defined for projects that have positive
values for the following project attribute:
rcap.max-rss The total amount of physical memory, in bytes, that is
available to the project's member processes
See project(5) for a description of project attributes.
For a system with one or more zones, you can dynamically set the
rcap.max-rss value for a zone with rcapadm(8). To set a persistent cap
on memory usage within a zone, you use zonecfg(8).
You configure rcapd through the use of rcapadm(8). The daemon can be
monitored with rcapstat(1). Configuration changes are incorporated into
rcapd by sending it SIGHUP (see kill(1)), or according to the configu‐
ration interval (see rcapadm(8)).
OPTIONS
The following option is supported:
-d Enable debug mode. Messages are displayed on the invoking user's
terminal.
EXAMPLES
Example 1 Setting Resident Set Size Cap Attribute
The following line in the /etc/project database sets an RSS cap of
1073741824 bytes for a project named foo.
foo:100::foo,root::rcap.max-rss=10737418240
EXIT STATUS
The following exit values are returned:
0 Successful completion.
1 An error occurred.
2 Invalid command-line options were specified.
FILES
/etc/project Project database.
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 _ Availabilitysystem/resource-mgmt/resource-caps _ Inter‐
face StabilityCommitted
SEE ALSO
rcapstat(1), svcs(1), project(5), attributes(7), smf(7), zones(7), rca‐
padm(8), svcadm(8), zonecfg(8)
NOTES
If any signal interrupts rcapd, all running scans are stopped immedi‐
ately and rcapd exits cleanly.
A collection's RSS can exceed its cap for some time before the cap is
enforced, even if sufficient pageable memory is available. This period
of time can be reduced by shortening the RSS sampling interval with
rcapadm.
If a collection exceeds its rss cap for a long time, rcapd may stop
enforcing caps on that collection and log a message suggesting setting
appropriate caps. Later, rcapd may resume to enforce caps on this col‐
lection.
To force rcapd to resume enforcing caps, set appropriate cap for the
collection and/or look for misbehaving processes and restart rcapd.
The rcapd service is managed by the service management facility,
smf(7), under the service identifier:
svc:/system/rcap:default
Administrative actions on this service, such as enabling, disabling, or
requesting restart, can be performed using svcadm(8). The service's
status can be queried using the svcs(1) command.
Oracle Solaris 11.4 16 Mar 2015 rcapd(8)