index cced74aa4613855359fbb13c0489473e87347c86..b2016a23c9a1308ced6ca4ecd67803f62c38a15a 100644 (file)
to add it. I will then try to provide an answer in the next release
of this tutorial. No feedback equals no changes! Additions to
this document are also welcome. -- Alex van den Bogaerdt
-E<lt>alex@ergens.op.het.netE<gt>
+E<lt>alex@vandenbogaerdt.nlE<gt>
=head2 Why this tutorial?
Let's compile the complete CDEF:
DEF:ds0=router1.rrd:AVERAGE
- CDEF:ds0modified=TIME,begintime,GE,TIME,endtime,LE,*,UNKN,ds0,IF
+ CDEF:ds0modified=TIME,begintime,GT,TIME,endtime,LE,*,ds0,UNKN,IF
This will return the value of ds0 if both comparisons return true. You
could also do it the other way around:
DEF:var=database.rrd:traffic:AVERAGE
CDEF:prev1=PREV(var)
- CDEF:time=TIME
+ CDEF:time=var,POP,TIME
CDEF:prevtime=PREV(time)
CDEF:derivate=var,prev1,-,time,prevtime,-,/
LINE3:derivate#000077:derivate
other people on the RRDtool mailing list. Please let me know if you
find errors in it or if you have trouble understanding it. If you
think there should be an addition, mail me:
-E<lt>alex@ergens.op.het.netE<gt>
+E<lt>alex@vandenbogaerdt.nlE<gt>
Remember: B<No feedback equals no changes!>
=head1 AUTHOR
Alex van den Bogaerdt
-E<lt>alex@ergens.op.het.netE<gt>
+E<lt>alex@vandenbogaerdt.nlE<gt>