[rrd-users] Re: graphing problem

[Serge Maandag]

If your updates have an offset to your cdp's then the values will be
interpoated. Check the contents of your rrd with rrdtool dump.

Also, you might be storing your values them as counters i.s.o. as
gauges.

Serge.

-----Original Message-----
From: Graham Lillico [mailto:graham_lillico at hotmail.com] 
Sent: Wednesday, May 22, 2002 1:05 PM
To: rrd-users at list.ee.ethz.ch
Subject: [rrd-users] graphing problem



Hi,

I'm trying to get a script to monitor my memory/swap status and I'm
having 
problem with the graph.

I'm using freeBSD 4.5 and snmpget to get the required information I
want.

I'm getting with values returned  as

enterprises.ucdavis.memory.memTotalReal.0  = 46072
enterprises.ucdavis.memory.memAvailReal.0  = 5024
enterprises.ucdavis.memory.memTotalSwap.0  = 134736
enterprises.ucdavis.memory.memAvailSwap.0  = 88916
enterprises.ucdavis.memory.memTotalFree.0  = 8680

However when I create the graph using the following

$RRDTOOL graph img/$HOST-memory.day.png --start -86400  \
  --title "Daily Statistics for $HOST" \
  --vertical-label "Size (bytes)" -l 0 -b 1024 \
    DEF:phys_tot=rrd/$HOST-memory.rrd:phys_size:MAX \
    DEF:phys_avail=rrd/$HOST-memory.rrd:phys_avail:MAX \
    DEF:swap_tot=rrd/$HOST-memory.rrd:swap_size:MAX \
    DEF:swap_avail=rrd/$HOST-memory.rrd:swap_avail:MAX \
    DEF:mem_free=rrd/$HOST-memory.rrd:mem_free:MAX \
    CDEF:p_phys_tot=phys_tot,1024,* \
    CDEF:p_phys_avail=phys_avail,1024,* \
    CDEF:p_swap_tot=swap_tot,1024,* \
    CDEF:p_swap_avail=swap_avail,1024,* \
    CDEF:p_mem_free=mem_free,1024,* \
    CDEF:pr_phys_tot=phys_tot,1024,/ \
    CDEF:pr_phys_avail=phys_avail,1024,/ \
    CDEF:pr_swap_tot=swap_tot,1024,/ \
    CDEF:pr_swap_avail=swap_avail,1024,/ \
    CDEF:pr_mem_free=mem_free,1024,/ \
    AREA:p_phys_tot#00FF00:"Total Physical memory         " \
    GPRINT:pr_phys_tot:MAX:" %5.2lf MB\n"       \
    LINE2:p_phys_avail#0000FF:"Available Physical memory     " \
    GPRINT:pr_phys_avail:MAX:" %5.2lf MB\n"     \
    LINE2:p_swap_tot#9900FF:"Total Swap memory             " \
    GPRINT:pr_swap_tot:MAX:" %5.2lf MB\n"       \
    LINE2:p_swap_avail#FF00FF:"Available swap memory         " \
    GPRINT:pr_swap_avail:MAX:" %5.2lf MB\n"     \
    LINE2:p_mem_free#FF0000:"Total Free memory             " \
    GPRINT:pr_mem_free:MAX:" %5.2lf MB\n"       \
    COMMENT:"Graphic created at $DATE_STRING.\r"

I'm getting values ofm

memTotalReal.0  = 58365.18
memAvailReal.0  = 56145.97
memTotalSwap.0  = 0.00
memAvailSwap.0  = 27251.13
memTotalFree.0  = 56145.97

Which to me are wrong,  Does anyone have any idea what I am doing wrong?
As 
this is driving me crazy.

Regards

Graham Lillico




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