[rrd-users] Re: =?ISO-8859-2?Q?If the samples are missing fill the blanks with the previous value. Can it =
Alex van den Bogaerdt
alex at ergens.op.het.net
Tue Dec 10 23:23:58 MET 2002
On Tue, Dec 10, 2002 at 05:48:10PM +0100, arfa at poczta.onet.pl wrote:
> Which is not what I expect to happen because at 13:32:00 my machine
> was still running at the spead of 26.7 (untill it changed to 25.5 at
All stats report the past. You are updating at time "t" saying
to RRDtool "from the last moment until now, ``this'' happened"
(where ``this'' depends on what you input into what type of counter).
This is quite normal when you compare it to network stats:
increase in value: 3000
increase in time: 300
rate 3000/300 = 10 per second
This update describes the time range hh:00 to hh:05
A GAUGE is just a way of saying to RRDtool:
"I already know the rate, don't try and compute it yourself"
Hence this rate is also valid for hh:00 to hh:05 when you present
it to RRDtool at time hh:05.
In order to do what you want: In your *front end* remember the
rate/speed/whatever, update with the previous value. This way
you tell RRDtool the speed *was* 26.7 in the previous time.
Dig into the archives (fairly deep IIRC) for a discussion on
modem lines in use. Similar story, similar solution.
Unsubscribe mailto:rrd-users-request at list.ee.ethz.ch?subject=unsubscribe
Help mailto:rrd-users-request at list.ee.ethz.ch?subject=help
More information about the rrd-users