It's even quite easy. If you want to have the average value printed below your graph, do it like this:
DEF:avg_in=/path/database.rrd:ds0:AVERAGE GPRINT:avg_in:AVERAGE:%6.2lf %sBps If you want to get the number to process it, then replace the GPRINT with PRINT. rrdtool will print it to std-out along with the size of your graph. I capture the PRINT outputs in a perl script like this: my ($Outputret,$xsize,$ysize) = RRDs::graph $destination, @rrdoptions; Ofcourse, you can also use 'rrdtool fetch' and calculate the average yourself. serge. -----Original Message----- From: Buttery, Daniel [mailto:[EMAIL PROTECTED] Sent: Tuesday, February 18, 2003 9:59 AM To: '[email protected]' Subject: [rrd-users] Getting a different 'average' Hi peeps. We've got RRDTool grabbing SNMP data from our Netscreen appliance to plot bandwidth utilisation for the Internet, and everything is working fine. Is there anyway I can print a value that will give me the average bandwidth used? ie.... I've written a Perl script that creates a graph from the database for a defined number of days. Using the information gathered, I'd like to know on average how much bandwidth we use during the day (say, between 8am and 6pm) for reporting purposes. Relatively straightforward requirement I guess, but I haven't found a way to do it after going through the documentation. If it isn't possible, can I get my Perl script to read the values being used to generate the graph, tot them up and use that in a sum to do a 'brute force' calculation (ie do the sum and pipe the answer to a text file or similar)? I hope that makes sense. Thanks in advance! Daniel Buttery IT Services Engineer Music Choice Ltd, Fleet House 57-61 Clerkenwell Road, London, EC1M 5LA Direct Line +44 (0)20 7014 8703 Mobile +44 (0)7901 916 614 Main Tel +44 (0)20 7014 8700 Main Fax +44 (0)20 7253 8460 Email [EMAIL PROTECTED] http://www.musicchoice.co.uk Support Digital Media - Join EDiMA - http://www.edima.org Music Choice Limited (company registration number 2838971) is a company incorporated in England and Wales with its registered office at Fleet House, 57-61 Clerkenwell Road, London EC1M 5LA. ********************************************************************** Information in this email is confidential and may be privileged. It is intended for the addressee only. If you have received it in error, please notify the sender immediately and delete it from your system. You should not otherwise copy it, retransmit it or use or disclose its contents to anyone. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com ********************************************************************** ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________ -- Binary/unsupported file stripped by Ecartis -- -- Err : No filename to use for decode, file stripped. -- Type: text/html -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
