READ the docs on rrds at the rrdtool home page. What you're seeing is a RATE 1004.465... units per second * 300 (or whatever) seconds per interval = actual count
-----Burton -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of The Jetman Sent: Monday, June 09, 2003 7:56 PM To: NTOP Mail List Subject: [Ntop] Is There a Trick to Understanding RRD ? I have a Python script, that reaches into a RRD file and extracts data samples, based on whatever file, date/time, etc, I specify. The example below [is intended to show] the average amt of data my own workstation rcvd from today starting at noon and the subsequent three hours: RRD Report for Mon Jun 9 12:00:00 2003: os.system( 'rrdtool fetch /var/db/ntop/rrd/interfaces/rl0/hosts/192.168.0.50/bytesRcvd.rrd \ AVERAGE -r 3600 -s 1055178000 -e 1055188800') =============== counter 1055178000: 1.0044655778e+03 1055181600: 1.1332594444e+03 1055185200: 3.7978324444e+02 1055188800: 2.6146522222e+02 Looking at the Host Traffic Stats for my workstation, I see something completely different for the Total Traffic Rcvd (2.3MB, 3.9MB, 1.1MB, 862.9KB.) I understand that the average amt of data received during the desired period may be slightly different than the actual amt of data received, but these results aren't even close. Hence, the title of this e-mail. Truth is, every file I look at, I try and compare the results I get from my script and I have yet to see RRD data that corresponds to what's reported in web pages. Later....Jet =============== From the desk of Jethro Wright, III ================ + Nothing causes self-delusion quite so readily as power. = === [EMAIL PROTECTED] ========================= Liu Binyan === _______________________________________________ Ntop mailing list [EMAIL PROTECTED] http://listgateway.unipi.it/mailman/listinfo/ntop _______________________________________________ Ntop mailing list [EMAIL PROTECTED] http://listgateway.unipi.it/mailman/listinfo/ntop
