Hi All, I want to apologize if the punctuation marks were misunderstood. I didn't mean being impolite,i was just expressing my wondering about the MRTG log behaviour. Thanks for your advice James. And Have All A nice day Shahira ----- Original Message ----- From: James Overbeck <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, February 17, 2003 10:28 AM Subject: [mrtg] Re: 4th and 5th columns in MRTG logfile
> > Hello Shahira, > Please try easing off on the punctuation marks. People will consider you > more polite, and helpful responses will be more numerous. > As an example, I'll give you the first five lines from a random MRTG log > file at my company. > > 1045468925 2732540222 3943054909 > 1045468925 94785 118521 94785 118521 > 1045468623 146518 156904 146518 156904 > 1045468500 127347 165933 146518 178574 > 1045468200 99205 150287 100508 178574 > > Look at the first column in each row. That is the number of seconds that > have passed since January 1, 1970, Greenwich Mean Time. Notice that the > fourth and fifth timestamps end in double zeros while the first three end in > comparatively random numbers. If you are on some sort of Unix system you can > transform them into legible times like this: > > $ perl -e 'print(localtime(1045468925)."\n")' > Mon Feb 17 17:02:05 2003 > > $ perl -e 'print(localtime(1045468200)."\n")' > Mon Feb 17 16:55:00 2003 > > If you look on down the timestamps in any MRTG log file and look at the > legible times like this, you'll notice that the minutes are always divisible > by five except for the first three lines' timestamps. The crontab that > generated this log file runs every five minutes at 16:57, 17:02, 17:07, and > so on. MRTG takes a few seconds to run before it actually touches the log > file. For the first few timestamps it maintains the same five minute > intervals as whatever crontab that affected the log file. From the fourth > line onward MRTG shifts this interval such that the minutes of the timestamp > are divisible by five, and begins to calculate the new average and maximum > for each displaced interval. If my crontab were set to run every five > minutes on the five-minute, and if my config file were very short and very > fast, then average and max for the first day would be identical. > I'm guessing that displacing the interval like this makes calculations easier. > > Best regards, > James > > > Shahira Rasmy wrote: > > Deal All, > > I need an urgent help in this.I still can't understand the values in the 4th and 5th columns in MRTG log file. > > I know they represent the maximum in a given period,but i can't understand what is this period in case of daily section?????? > > I thought that the 2nd & 4th,and, the 3rd & 5th columns will be identical as the reading is taken every 5 minutes so the max in this period will be the value itself.But i found the values to be different!!!!!! > > > > Can anyone help me to understand how the mrtg thinks?????????????? > > > > Thanks, > > Shahira > > -- > 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 > > > > -- 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
