Exactly!
The data come in at an unknown timing. That is why I had them updated at
random time and different interval. I read about the comparison between
heartbeat and step, and didn't seem to find a way around it. In the
document written by Don Baarda, it says,
.If the interval between samples is longer than heartbeat, the entire
interval is considered unknown...
Meanwhile, I am not clear about whether this includes the end points of the
interval if they are primary data points in an RRD.
Serge was right on the data I tried to updated, 7200 is greater than 3600,
but I would think RRDTool can be smart enough to determine 99417900 is
unknown while 994176000 is 3 and 994183200 is 1, instead of thinking
everything in the interval including the end points are unknown.
Due to the nature of the data, if RRDTool cannot help, maybe I will need to
artificially put a 0 for every missing heartbeat. This isn't hard but is
definitely making my job more trivial.
Thanks, folks!
Chang-Ping
994176000:3 994183200:1 994190400:1 994194000:4 994197600:4 994201200:5 \
994204800:4 994212000:8 994215600:1 994219200:1 994255200:1 994258800:2 \
994262400:4 994266000:2 994269600:3 994273200:2 \
missing- 994176000: NaN
994179600: NaN
missing- 994183200: NaN
994186800: NaN
missing- 994190400: NaN
994194000: 4.00e+00
994197600: 4.00e+00
994201200: 5.00e+00
994204800: 4.00e+00
994208400: NaN
missing- 994212000: NaN
994215600: 1.00e+00
994219200: 1.00e+00
994222800: NaN
994226400: NaN
99423: NaN
994233600: NaN
994237200: NaN
994240800: NaN
994244400: NaN
994248000: NaN
994251600: NaN
missing- 994255200: NaN
994258800: 2.00e+00
Hmm, what I do see is that you have a heartbeat of 3600 secs. Your
updates (at least the first two ones, didn't check the other ones) on
the other hand are made with a 7200 sec interval. This is
well over the
heartbeat threshold, so rrdtool will take the value for a NaN.
-Original Message-
From: Chris Snell [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 05, 2001 6:48 PM
To: Chang-Ping Hsiao; Rrd-User (E-mail)
Subject: Re: [rrd-users] Help needed on rrdtool create and rrdtool
update
I took a quick glance at your rrdupdate and it looks like you are
occasionally updating at an interval different from your --step.
the RRDs after update. Could anyone help? I can't seem to
find where the
problem is. Did I make some mistakes in rrdtool create, rrdtool
update, or rrdtool fetch?
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