Linux

RRDTool Command:

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title="Mccauley - Apache Statistics - Bytes / Request" \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale-max \
--lower-limit=0 \
--vertical-label="bytes / hit" \
--slope-mode \
--font TITLE:12: \
--font AXIS:8: \
--font LEGEND:10: \
--font UNIT:8: \
DEF:a="/home/cacti/cacti-0.8.7a/rra/mccauley_apache_idle_workers_1395.rrd":apache_total_kbytes:AVERAGE \
DEF:b="/home/cacti/cacti-0.8.7a/rra/mccauley_apache_idle_workers_1691.rrd":apache_total_hits:AVERAGE \
CDEF:cdefb=b,UN,0,b,100000,GT,0,b,IF,IF \
CDEF:cdefd=cdefb,0,EQ,0,cdefa,1024,*,cdefb,/,IF,0,1000000,LIMIT \
CDEF:cdefg=a,0,0,LIMIT \
CDEF:cdefh=b,0,0,LIMIT \
AREA:a#FFF200FF:""  \
 \
 \
GPRINT:cdefd:LAST:"      Current\:%8.2lf %s"  \
GPRINT:cdefd:AVERAGE:"Average\:%8.2lf %s"  \
GPRINT:cdefd:MAX:"Maximum\:%8.2lf %s\n"  \
LINE2:cdefg:"kBytes"  \
LINE2:cdefh:"Hits"  \
COMMENT:"                            Represents the number of bytes per hit\n"  \
COMMENT:"                                 ApacheStats v0.4 - Rolf Poser\n" 
RRDTool Says:

ERROR: invalid rpn expression in: cdefb,0,EQ,0,cdefa,1024,*,cdefb,/,IF,0,1000000,LIMIT