[rrd-users] Will rrdtool be unhappy with a 1.1GB file?

Marc MERLIN marc_rrd at merlins.org
Sat Oct 24 01:04:34 CEST 2009


I can spare the disk space, I'd rather log and keep more if it's not going
to cause issues.
Is graphing 20 temperatures every minute over 5 years, and then every 5
minutes over 30 years really a bad idea, or on a modern system as long as I
have the disk space, who cares?

My definition will either be
/usr/bin/rrdtool create /var/lib/cacti/rra/housetemp_test.rrd --step 60  DS:attic:GAUGE:600:0:150 DS:roof_shingles:GAUGE:600:0:150 DS:MBR_vent_probe:GAUGE:600:0:150 DS:MBR_HVAC:GAUGE:600:-1:1 DS:main_HVAC:GAUGE:600:-1:1 DS:garage_freezer:GAUGE:600:-50:150 DS:garage_fridge:GAUGE:600:0:150 DS:br4:GAUGE:600:0:150 DS:br3:GAUGE:600:0:150 DS:outdoors_roof:GAUGE:600:0:150 DS:outdoors_crawlspace:GAUGE:600:0:150 DS:hall_closet:GAUGE:600:0:150 DS:computer_closet:GAUGE:600:0:150 DS:corridor:GAUGE:600:0:150 DS:crawlspace:GAUGE:600:0:150 DS:family_room:GAUGE:600:0:150 DS:garage:GAUGE:600:0:150 DS:living_room:GAUGE:600:0:150 DS:masterbedroom:GAUGE:600:0:150 DS:br2:GAUGE:600:0:150 RRA:AVERAGE:0.5:1:2628000 RRA:AVERAGE:0.5:120:131400 RRA:AVERAGE:0.5:1440:10950 RRA:AVERAGE:0.5:5:3153600 RRA:AVERAGE:0.5:30:525600 RRA:MAX:0.5:30:525600 RRA:MAX:0.5:120:131400 RRA:MAX:0.5:1440:10950
(1.1GB)

or
/usr/bin/rrdtool create /var/lib/cacti/rra/housetemp_test2.rrd --step 60  DS:attic:GAUGE:600:0:150 DS:roof_shingles:GAUGE:600:0:150 DS:MBR_vent_probe:GAUGE:600:0:150 DS:MBR_HVAC:GAUGE:600:-1:1 DS:main_HVAC:GAUGE:600:-1:1 DS:garage_freezer:GAUGE:600:-50:150 DS:garage_fridge:GAUGE:600:0:150 DS:br4:GAUGE:600:0:150 DS:br3:GAUGE:600:0:150 DS:outdoors_roof:GAUGE:600:0:150 DS:outdoors_crawlspace:GAUGE:600:0:150 DS:hall_closet:GAUGE:600:0:150 DS:computer_closet:GAUGE:600:0:150 DS:corridor:GAUGE:600:0:150 DS:crawlspace:GAUGE:600:0:150 DS:family_room:GAUGE:600:0:150 DS:garage:GAUGE:600:0:150 DS:living_room:GAUGE:600:0:150 DS:masterbedroom:GAUGE:600:0:150 DS:br2:GAUGE:600:0:150 RRA:AVERAGE:0.5:1:525600 RRA:AVERAGE:0.5:5:525600 RRA:AVERAGE:0.5:120:131400 RRA:AVERAGE:0.5:1440:10950 RRA:AVERAGE:0.5:30:525600 RRA:MAX:0.5:120:131400 RRA:MAX:0.5:1440:10950 RRA:MAX:0.5:30:525600
(381MB)

I would think that one it's created rrdtool shouldn't really care too much
how big the file is (maybe a few more seeks as data gets introduced), but I
thought I'd ask.

Thanks,
Marc
-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems & security ....
                                      .... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/  



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