rrd tool documentation
RRD CALC
Name of rrd file to create
Polling Interval in seconds
Number of polls that can be missed before an UNKNOWN value is stored
DS name
DST
GAUGE
COUNTER
DERIVE
ABSOLUTE
Minimum possible value (U for Undefined)
Maximum possible value (U for Undefined)
COMPUTE Values
COMPUTE
DS name for COMPUTE
RPN expression
Consolidations
AVERAGE
MIN
MAX
No Holt-Winters
HWPREDICT
MHWPREDICT
alpha value
%
points
α
beta value
%
points
β
gamma value (not used)
%
points
γ
row count
seasonal period
points
RRA Definitions
Days to keep
Minutes to summerize
RRA1
RRA2
RRA3
RRA4
RRA5
TIME CALC
minute
hour
day
week
month
year
=
sec.
Step interval:
Heartbeat:
Combine (secs)
xff
steps
rows
bytes