SVRCTL(1) FreeBSD General Commands Manual SVRCTL(1)
NAME
svrctl - send servers control messages
SYNOPSIS
svrctl <vfs|pm> get <request>
svrctl <vfs|pm> set <request> <value>
DESCRIPTION
The svrctl utility allows to override the values of variables inside VFS
or PM or to retrieve the values of variables. The variables that are
allowed to be overridden are hard coded in the servers.
EXAMPLES
To retrieve how many threads are currently actively carrying out work in
VFS:
svrctl vfs get active_threads
To generate a stack trace of all threads in VFS:
svrctl vfs get print_traces
To set verbosity level of VFS (allowed values range from 0 to 4)
svrctl vfs set verbose 1
To retrieve boot monitor parameters (note that these are also available
through sysenv(1) ) such as rootdevname , memory , hz , and if set,
bootopts , cttyline , cttybaud :
svrctl pm get rootdevname
svrctl pm get memory
svrctl pm get hz
svrctl pm get bootopts
svrctl pm get cttyline
svrctl pm get cttybaud
EXIT STATUS
In case svrctl is not properly invoked or the provided request is not
valid 1 is returned, otherwise 0.
AUTHORS
Thomas Veerman <
[email protected]>
FreeBSD 14.1-RELEASE-p8 $April 5, 2012$ FreeBSD 14.1-RELEASE-p8