> Please could somebody help me is trying to understand how the log files > withing MRTG are structured?!? > Just a overview would be nice!
An overview is all you get. Line one: Date (seconds since Jan 1 1970), latest In and Out counter readings from Router (or Out & In, I can never remember) Line two onwards: Date (as above), Rate In, Rate Out, Peak In, Peak Out. Each time MRTG runs, it saves the Log as OLD and updates the Log. The new reading is put at the top. It subtracts the previous reading, divides by time interval (300 secs), truncates decimals and writes the calculated Rate to the file (in Bytes/sec. 'bits' conversion is done at presentation time, not in the log). It then whips downs the file, keeping 5 min points for a day, half hour points for a week, etc, so the file does not grow over time, but keeps a lot of history. The Peak values reflect the max 5 min Rate seen during the appropriate period. If you want something shorter than 5 mins, or you want decimals or negative values, you need to move on to RRD For exact accuracy issues, search the archive for words like Normalise. Regards Peter -- Unsubscribe mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/mrtg FAQ http://faq.mrtg.org Homepage http://www.mrtg.org WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
