[rrd-developers] Re: (bug?) Incorrectly selecting low-res RRA

[Stanislav Sinyagin]

Hi again, 

--- Phil Radden <P.Radden at rl.ac.uk> wrote:
> === sample rrdtool info ===
> > filename = "transfers.rrd"
> > rrd_version = "0001"
> > step = 15
> > last_update = 1048379989
> > ds[sum].type = "GAUGE"
> > ds[sum].minimal_heartbeat = 30
> > ds[sum].min = NaN
> > ds[sum].max = NaN
> > ds[sum].last_ds = "UNKN"
> > ds[sum].value = 0.0000000000e+00
> > ds[sum].unknown_sec = 0
> > rra[0].cf = "AVERAGE"
> > rra[0].rows = 240
> > rra[0].pdp_per_row = 1
> > rra[0].xff = 5.0000000000e-01
> > rra[0].cdp_prep[0].value = NaN
> > rra[0].cdp_prep[0].unknown_datapoints = 0
<skipped>

> === sample working rrdtool fetch ===
> > $ rrdtool fetch transfers.rrd AVERAGE -s -2419200 -e N
> >                       sum
> > 
> > 1045961280: nan
> > 1045971360: nan
> > 1045981440: nan
> > 1045991520: nan
> > 1046001600: nan
> > 1046011680: nan
> > 1046021760: nan
> > 1046031840: nan
> > 1046041920: nan
> > 1046052000: nan
> > 1046062080: nan
> > [...snip lots here, rather than post 240 lines of stuff...]
> > 1048269600: 0.0000000000e+00
> > 1048279680: 0.0000000000e+00
> > 1048289760: 0.0000000000e+00
> > 1048299840: 0.0000000000e+00
> > 1048309920: 0.0000000000e+00
> > 1048320000: 1.1706349206e-02
> > 1048330080: 0.0000000000e+00
> > 1048340160: 1.7460317460e-02
> > 1048350240: 6.4484126984e-03
> > 1048360320: 5.5555555556e-03
> > 1048370400: 5.5555555556e-03
> > 1048380480: 3.3531746032e-02
> > 1048390560: nan

are you sure this output is correct? The timestamps show 
the step of 80 seconds, while the RRD step is 15 seconds. 

Stan



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