[rrd-users] RRDTool Fetch : Recover data with a different resolution of the RRA

[LE GONIDEC Romain]

This is not a problem of timestamp.
If I want the average of 100 values ​​between 1316613312 and 1316699712

I do :

rrdtool fetch routeur-master-snmp-lan_in.rrd AVERAGE --end 1316699712 -r 864 -s 1316613312

I doesn't have 100 values.

1316699712 is a multiple of 864, 1316613312 too.

1316699712 – 1316613312 = 86400
86400 / 864 = 100

Romain

________________________________
De : rrd-users-bounces+romain.le-gonidec=cg27.fr at lists.oetiker.ch [mailto:rrd-users-bounces+romain.le-gonidec=cg27.fr at lists.oetiker.ch] De la part de LE GONIDEC Romain
Envoyé : mercredi 21 septembre 2011 14:21
À : 'rrd-users at lists.oetiker.ch'
Objet : [rrd-users] RRDTool Fetch : Recover data with a different resolution of the RRA

I use RRDtool to retrieve data. Until now I was recovering my data according to the RRA.
But today I want to recover my data differently.

I would like to get that 100 values ​​on the last day, a value every 864 seconds.
So, I did : rrdtool fetch routeur-master-snmp-lan_in.rrd AVERAGE -r 864 -s -1d

But but it gives me 51 values and not 100.
I don't understand.

Can you help me please?

My RRD configuration :

filename = "routeur-master-snmp-lan_in.rrd"
rrd_version = "0003"
step = 60
last_update = 1316604436
ds[sup].type = "COUNTER"
ds[sup].minimal_heartbeat = 120
ds[sup].min = NaN
ds[sup].max = NaN
ds[sup].last_ds = "2173671760"
ds[sup].value = 9.5730425682e+06
ds[sup].unknown_sec = 0
rra[0].cf = "AVERAGE"
rra[0].rows = 372
rra[0].pdp_per_row = 1440
rra[0].xff = 5.0000000000e-01
rra[0].cdp_prep[0].value = 1.8936266242e+08
rra[0].cdp_prep[0].unknown_datapoints = 0
rra[1].cf = "LAST"
rra[1].rows = 1440
rra[1].pdp_per_row = 1
rra[1].xff = 5.0000000000e-01
rra[1].cdp_prep[0].value = NaN
rra[1].cdp_prep[0].unknown_datapoints = 0
rra[2].cf = "AVERAGE"
rra[2].rows = 372
rra[2].pdp_per_row = 120
rra[2].xff = 5.0000000000e-01
rra[2].cdp_prep[0].value = 4.7453525971e+07
rra[2].cdp_prep[0].unknown_datapoints = 0
rra[3].cf = "AVERAGE"
rra[3].rows = 336
rra[3].pdp_per_row = 30
rra[3].xff = 5.0000000000e-01
rra[3].cdp_prep[0].value = 1.3743371732e+07
rra[3].cdp_prep[0].unknown_datapoints = 0

Romain
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