Raritan Dominion SX16, Installation And Operation Manual, Page: 152 / 162

138 D
OMINION
SX I
NSTALLATION AND
O
PERATIONS
M
ANUAL
ampresponse
}
ampresponse
}
set ports 1
set noOfPorts 2
initEvents
#Main loop starts here...
while { 1>0 } {
cpuUtil
$ports
ampdelay $intr
set rval [ListenCmds]
if { $rval == 1} {
delEvents
unset $ports
unset $noOfPorts
unset $thr
unset $intr
unset $mailid
break
}
incr ports 1
if { $ports > $noOfPorts } {
set ports 1
}
}
Script Function Description:
It is required to monitor CPU usage of user process running on several HP-UX machines through RS232 console
connections. This TCL script will monitor the use through the well-known
vmstat functionality given by HP-UX.
When CPU utilization has surpassed the given limit, this script will trigger an event that notifies the subscribed users
via e-mail. The user is allowed to input the threshold limit or the frequency through his/her own commands (This
example use THR and INTR respectively).
Key programming points:
•
Use ampclear to remove all history information for a port
•
Use ampread with “\n” as terminator since the script has to read each line to find out the user process utilization
that is on the 10
th
line.
•
Use amptriggerevent to trigger a user-defined event event.alarm.cpu . The event may not begin with “amp,” as
that namespace is reserved for system-generated events. A user may subscribe to events related only to one
server by designating which server they are interested in. For example, a user may subscribe to
event.alarm.cpu.2 to receive a notification when cpu utilization on server 2 is measuring above 10 %.
•
The event will be sent only if the user who requests the notification is properly subscribed in the Notification
subscription list.