On Mon, Sep 26, 2005 at 01:58:37PM -0500, Adam Scheblein wrote:
Recently i have been trying to create a custom script that grabs cpu utilization percentage, however when i try to get it to graph, it will not work... I have read the man page for hobbitd_rrd as well as the message thread "custom RRD data" in the hobbit mailing list archives, however i still cannot get it to work.
Here is my client script:
[snip]
$BB $BBDISP "status $MACHINE.$TEST $COLOR `date` - $STATUS Used CPU: $USED_CPU"
This sends a one-line status report with the text
green Tue Sep 27 23:11:49 CEST 2005 - ok Used CPU: 15
Here is my feeder script on the server side:
[snip]
# Analyze the message we got
cpu2=grep "^OK - " $FNAME | awk '{ print $11 }'
This line looks for "OK" at the beginning of a line (but it is
in the middle of the line, and in lowercase). So it probably won't
find anything, and $cpu2 will be blank.
If you do want to use an extension script for this, I'd suggest
sending in the status message like this:
$BB $BBDISP "status $MACHINE.$TEST $COLOR `date` - $STATUS Used CPU: $USED_CPU"
i.e. split it on two lines, and have just the "Used CPU: X"
on a line by itself. Then your feeder script should be
cpu2=grep "^Used CPU:" $FNAME | awk '{ print $3 }'
However, there's a simpler way of getting the same result.
Assuming you already have the vmstat data - e.g. from the Hobbit
client, or by running the BB client with the LARRD add-on - you can leverage those data and generate the same graph by changing the [la] graph definition in your hobbitgraph.cfg
to this:
[la]
TITLE CPU Utilitization
YAXIS % Used
-u 100
-r
DEF:cpu_idl=vmstat.rrd:cpu_idl:AVERAGE
CDEF:pbusy=100,cpu_idl,-
LINE2:pbusy#00CC00:% CPU busy
GPRINT:pbusy:LAST: \: %5.1lf (cur)
GPRINT:pbusy:MAX: \: %5.1lf (max)
GPRINT:pbusy:MIN: \: %5.1lf (min)
GPRINT:pbusy:AVERAGE: \: %5.1lf (avg)\n
This determines the CPU busy percentage as (100 - idle %).
Regards,
Henrik