On 04/17/2012 10:15 PM, Tobias Oetiker wrote: > Hi Daniel, > > Yesterday Daniel Hilst wrote: > >> On 04/16/2012 01:19 PM, Daniel Hilst wrote: >>> When I do an update on some rrd file the rrdtool -- or something -- >>> spread my input value by time. >>> >>> Here is how I reproduce: >>> >>> 1) Create my rrd with this command >>> rrdtool create --step 10 test.rrd DS:v:GAUGE:600:U:U RRA:AVERAGE:0.5:1:50 >>> >>> 2) The feed it with: >>> rrdtool update test.rrd 1334578211:10 >>> rrdtool update test.rrd 1334578221:0 >>> >>> >>> I get >>> 1334578210 9.000000 >>> 1334578220 1.000000 >>> >>> >>> The RRDtool have spread my values, so 9 + 1 = 10, Its cool, but some >>> times I want 10, then 0.. Is there a way to turn this feature off for >>> specific rrd file? >>> >>> If update rrd on 10 multiples then it works as I expect, so If I did: >>> rrdtool update test.rrd 1334578210:10 >>> rrdtool update test.rrd 1334578220:0 >>> >>> I would get >>> 1334578210 10.000000 >>> 1334578220 0.000000 >>> >>> I'm using collectd so I cant round up epoch.. >>> >>> >>> Thanks in advance! >>> >>> Cheers! >>> >> My solution was create a patch to collectd to round up the epoch before >> submit.. >> >> []'s >> >> Here is if is of any interest :) > > question: why would you want to lie about the data you acquired? > > if you need higher precision, then you need to up your sampling > rate ... > > cheers > tobi > >> >
Hey tobias, I'm using collectd tail plugin to monitor Oracle database logs, matching ORA- errors. When I got one error at 1334578215 for example, on graph I'll see 0.5 error at 1334578210 and 0.5 error at 1334578220 -- Remember that collectd uses 10 as step, so while generating graph I just multiply the value collected by 10. -- 0.5 error is not something readable, so I round epoch on rrdtool plugin to get an integer number, avoiding the interpolation. Cheers :) -- Follow the white rabbit! _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
