[rrd-users] Graphing resolution seems to change if you view longer than 1d graph

[jeff at unixisgod.com]

The first command gives a graph with a resolution that appears as it
should, 5 minute intervals.

However, the latter yeilds a much different looking graph, which seems to
have a resolution of half an hour.
==================================

rrdtool graph /your/file/name/here.gif \
--width '579' \
--height '200' \
'DEF:C=/var/www/NetappMon/var/rrds/netcache/NETCACHE1.rrd:cliconn:AVERAGE' \
'DEF:F=/var/www/NetappMon/var/rrds/netcache/NETCACHE2.rrd:cliconn:AVERAGE' \
'LINE1:C#6B8E23:NETCACHE1 AVE cliconn' \
'GPRINT:C:MIN:(Min=%.0lf' \
'GPRINT:C:AVERAGE:Avg=%.0lf' \
'GPRINT:C:MAX:Max=%.0lf)' \
'COMMENT:\n' \
'LINE1:F#B22222:NETCACHE2 AVE cliconn' \
'GPRINT:F:MIN:(Min=%.0lf' \
'GPRINT:F:AVERAGE:Avg=%.0lf' \
'GPRINT:F:MAX:Max=%.0lf)' \
'COMMENT:\n'

===============================================

rrdtool graph /your/file/name/here.gif \
--start 'e-2d' \
--width '579' \
--height '200' \
'DEF:C=/var/www/NetappMon/var/rrds/netcache/NETCACHE1.rrd:cliconn:AVERAGE' \
'DEF:F=/var/www/NetappMon/var/rrds/netcache/NETCACHE2.rrd:cliconn:AVERAGE' \
'LINE1:C#6B8E23:NETCACHE1 AVE cliconn' \
'GPRINT:C:MIN:(Min=%.0lf' \
'GPRINT:C:AVERAGE:Avg=%.0lf' \
'GPRINT:C:MAX:Max=%.0lf)' \
'COMMENT:\n' \
'LINE1:F#B22222:NETCACHE2 AVE cliconn' \
'GPRINT:F:MIN:(Min=%.0lf' \
'GPRINT:F:AVERAGE:Avg=%.0lf' \
'GPRINT:F:MAX:Max=%.0lf)' \
'COMMENT:\n'

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