Can't make UserParameter send any data!

[maciekish]

Hi,
I'm trying to log CPU usage of certain processes using a script i made.

The UserParamter is defined as follows (both in zabbix_agent and zabbix_agentd.conf since i dont know which one is in use):

UserParameter=system.processcpu[*],/etc/zabbix/userscript/processcpu.sh $1

Running the script like this /etc/zabbix/userscript/processcpu.sh smbd displays the correct % when transferring a large file, running the script as a regular user.

However after adding an item to my linux template, it doesnt show up in "latest data" or when selecting keys in the zabbix ui (should it appear there?). After editing the config i restarted the agent using:

sudo service zabbix-agent restart

And got OK back.

I configured the zabbix item like this

Host				Template_Linux
Description			CPU Usage Apache2
Type				Zabbix agent
Key				system.processcpu[apache2]
Type of information		Numeric (unsigned)
Data type			Decimal
Units				%
Use custom multiplier	 	No
Update interval (in sec)	20

Here is the script for reference:

samples=3

values=$(top -b -n $samples | grep smbd | cut -c 43-45)

valuesarr=(`echo $values | tr " " "\n"`)

total=0

for x in "${valuesarr[@]}"
do
total=`echo $total + $x | bc`
done

total=`echo $total / $samples | bc`

echo "$total"

Attempting to graph the item yields "no data".