Re: {bb} graphing "active" memory output from bb-memory.sh on linux with larrd.

[Tom Georgoulias <tgeorgoulias@nandomedia.com>]

(This is a resend, so my apologies if it duplicates get posted to the 
list.  My previous attempts with the patch file attached failed.)

Charles Jones wrote:
> I second that request.  By default the larrd memory graphs for linux 
> hosts are all but useless since it graphs the "Physical" value which is 
> always near 100% due to the output of the linux free command that 
> reflects the memory buffers/caching.

I think I have it working now, at least for the all of the Linux clients
I'm running.  The only edits I made were to the memory-larrd.sh
script--I'm running larrd-graphs.cgi v1.5 (from deadcat.net) and it
automagically took care of everything else.  I added a section to graph
the "Actual" data along side the real/swap, plus I took the liberty of
changing the word "real" to "physical" so the plots use the same names
as the output from bb-memory.sh:  Physical, Actual & Swap.

Patch file is below.  Should be as simple as grabbing
larrd-graphs-1.5.tar.gz from deadcat.net and installing it, then

cd LARRDHOME
patch memory-larrd.sh <memory-larrd.sh.patch

Hope that helps.  Good luck.

Tom

--- memory-larrd.sh.orig	2004-10-27 08:30:47.000000000 -0400
+++ memory-larrd.sh	2004-10-27 09:14:20.000000000 -0400
@@ -85,7 +85,10 @@
 	# pearcec added this line to match how larrd likes the rrds 11/9/2000
 	# I need to fix this
 	#HOST=`echo $HOST | $SED 's/,/\.//'`
-	RRD=$BBRRDS/$HOST.memory.real.rrd
+	# Changed RRD filename contents from "real" to "physical"
+	# so the plot name on the graph  matches bb-memory.sh
+	# output. Tom Georgoulias 10/27/04
+	RRD=$BBRRDS/$HOST.memory.physical.rrd

 	# if it doesn't exist, make it
 	if [ ! -f $RRD ]
@@ -161,6 +164,52 @@
 	fi
         $RRDTOOL update $RRD $TS:$VALUE

+# add support to graph "Actual" memory as well.
+# I just copied the section above for swap and  edited the filename
+# for RRD, plus the HEAD line to grab the actual values.
+# Since I'm using larrd-graphs.cgi v1.5 from deadcat.net, I didn't
+# need to make any edits to that script.
+# Tom Georgoulias 10/27/04
+RRD=$BBRRDS/$HOST.memory.actual.rrd
+ 

+ 

+        # if it doesn't exist, make it
+        if [ ! -f $RRD ]
+        then
+                # $RRAS is defined in larrd.conf
+                $RRDTOOL create $RRD DS:realmempct:GAUGE:600:0:U $RRAS
+ 

+ 

+                if [ $STATUS -eq 1 ]
+                then
+                        echo "$0: STATUS did not find $RRD, created."
+                fi
+        fi
+ 

+        # RRD acquisition co>plete, proceed to TS
+ 

+        # i am lazy right now and just using current -gra
+        # getting epoch from a file -grapht>p is a pain
+        # so the -grapht>p is from when the data is gathered
+        # not when it actually happened, ugh
+        TS=N
+        # TS=acquisition complete, proceed to VALUE
+ 

+        # now lets get the data
+        # look through the file and get what you want
+        #  e.g. load average
+         VALUE=`$HEAD -4 $log | $EGREP 'Actual' |$AWK '{print $5}' 
|$SED 's/%//g'`
+         #VALUE=`$HEAD -4 $log | $GREP Swap |$AWK '{print $5}' |$SED 
's/%//g'`
+        # VALUEoacquired, do the job
+ 

+        if [ $DEBUG -eq 1 ]
+        then
+                echo "$0: DEBUG $RRDTOOL update $RRD $TS:$VALUE"
+        fi
+        $RRDTOOL update $RRD $TS:$VALUE
+ 

+
+
 done

 	# NT logs the memory usage in .cpu

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