[drraw-users] start/end time on a DEF

[Cattell, Michael]

Good morning,

I've been using drraw for some time now and find it a very useful companion to Gangila and other rrd related data.
Of late, I've been writing some custome rrd graphs that use SHIFT so that I can compare a few day's worth of data for one data source overlaid.

This is particularly nice if you want to see what yesterday's CPU or I/O is like compared to today.

Here is an example of how I typically do it.  This is an example I copied from the internet, but the syntax is correct.



rrdtool graph day_c.png \

        --end midnight \

        --start end-86400 \

        --upper-limit 400000 \

        --lower-limit -100000 \

        DEF:a=test.rrd:ds0:AVERAGE \

        DEF:b=test.rrd:ds0:AVERAGE:start=end-86400:end=midnight-86400 \

        LINE:a\#00CC00:a \

        LINE:200000 \

        SHIFT:b:86400 \

        LINE:b\#FF0000:b:STACK

With 2.2a5, there's SHIFT and that's way cool.  However, I have been able to figure out how to pull off the start/end times that are on the DEF and that seems like the only way to make sure the SHIFT shows data after the offset is in effect.

Any ideas on how I can do this with DRRAW?

BTW - love the Orange.

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