Thank you. I understood perfectly
On 23 April 2013 15:43, Russell Dwarshuis <[email protected]> wrote: > No, you have 1 packet loss. It is recorded as: > > 1366720500: -nan 9,3666666667e-01 > 1366720800: -nan 6,3333333333e-02 > > That is, 0.937 of a packet and, 5 minutes later, 0.033 of a packet. That > is why > maximum packet loss is 0.937/20 = 4.68% instead of 5% > > It does this because the packet loss measurement occurred at roughly > 1366720520 and the > measurement is interpolated. Actually I think it is a little more > complicated > that that, but that is the basic concept. This Works great when you are > not > worried about perfect precision, but not so great when you are trying to > measure integers! > > > -Russell Dwarshuis > > ----- Original Message ----- > From: "Alessandro Palermo" <[email protected]> > To: "Russell Dwarshuis" <[email protected]> > Cc: "smokeping-users" <[email protected]> > Sent: Tuesday, April 23, 2013 1:58:56 PM > Subject: Re: [smokeping-users] Get packet loss data in last ten days graph > > > I still got a doubt about the calculataion of packet loss. > For example I've got 2 losses in the last 3 hours in two consecutives > polling cycles (1/20 and 1/20). > The data in the graphs shows pl= 0.14% avg and 4.68% max > In the rrd data I've got: > > rrdtool fetch myrrdfile.rrd AVERAGE -s -3h -e now | cut -f 1-3 -d' ' > > > 1366717200: -nan 0,0000000000e+00 > 1366717500: -nan 0,0000000000e+00 > 1366717800: -nan 0,0000000000e+00 > 1366718100: -nan 0,0000000000e+00 > 1366718400: -nan 0,0000000000e+00 > 1366718700: -nan 0,0000000000e+00 > 1366719000: -nan 0,0000000000e+00 > 1366719300: -nan 0,0000000000e+00 > 1366719600: -nan 0,0000000000e+00 > 1366719900: -nan 0,0000000000e+00 > 1366720200: -nan 0,0000000000e+00 > 1366720500: -nan 9,3666666667e-01 > 1366720800: -nan 6,3333333333e-02 > 1366721100: -nan 0,0000000000e+00 > 1366721400: -nan 0,0000000000e+00 > 1366721700: -nan 0,0000000000e+00 > 1366722000: -nan 0,0000000000e+00 > 1366722300: -nan 0,0000000000e+00 > 1366722600: -nan 0,0000000000e+00 > 1366722900: -nan 0,0000000000e+00 > 1366723200: -nan 0,0000000000e+00 > 1366723500: -nan 0,0000000000e+00 > 1366723800: -nan 0,0000000000e+00 > 1366724100: -nan 0,0000000000e+00 > 1366724400: -nan 0,0000000000e+00 > 1366724700: -nan 0,0000000000e+00 > 1366725000: -nan 0,0000000000e+00 > 1366725300: -nan 0,0000000000e+00 > 1366725600: -nan 0,0000000000e+00 > 1366725900: -nan 0,0000000000e+00 > 1366726200: -nan 0,0000000000e+00 > 1366726500: -nan 0,0000000000e+00 > 1366726800: -nan 0,0000000000e+00 > 1366727100: -nan 0,0000000000e+00 > 1366727400: -nan 0,0000000000e+00 > 1366727700: -nan 0,0000000000e+00 > 1366728000: -nan -nan > > And I can't understand how to obtain the value of pl=0.14% avg. I thought > that the data stored in the rrd was the number of packet loss in a round or > the average each 5 minutes. > In the first case I get a value of pl=(number of packet losses in last > 3hours/total packets sends)2/720=0.0028, then pl=0.28%. > Surely I'm wrong in something. > > Thanks > > > > > On 22 April 2013 21:32, Alessandro Palermo < [email protected] > wrote: > > > > > Thanks very much Russell. I will try this. > > Regards > El 22/04/2013 15:36, "Russell Dwarshuis" < [email protected] > escribió: > > > > > Here is an example (I piped it through cut so you don't have to see all 20 > ping times): > rrdtool fetch your.rrd AVERAGE -s -20minutes -e now | cut -f 1-3 -d' ' > > > 1366654200: nan 0.0000000000e+00 5.7700000000e-03 5.7600000000e-03 > 1366654500: nan 0.0000000000e+00 5.7700000000e-03 5.7600000000e-03 > 1366654800: nan 0.0000000000e+00 5.7700000000e-03 5.7600000000e-03 > 1366655100: nan 0.0000000000e+00 5.7714666667e-03 5.7600000000e-03 > > Loss is in column 3 (0.0000000000e+00) > > > > -Russell Dwarshuis > > ----- Original Message ----- > From: "Alessandro Palermo" < [email protected] > > To: [email protected] > Sent: Monday, April 22, 2013 10:42:46 AM > Subject: [smokeping-users] Get packet loss data in last ten days graph > > > > > > Hi list. > I'm monitoring around 300 wan links with fping probe with no problem. I > have tuned smokeping to get more information I have added a plugin to show > the lasts median rtt in a gauges view and a link to show the information > about the route of each wan links and record the changes in the routes. > Now I want to create a report to monitoring the packet loss in the last > ten day and send a mail with the graph of the links that have a packet loss > greater than 5% per example. > How can i get this value for the .rrd files? I've been inspected the rrd > files but I just see the last loss value. > > Thanks in advance > > _______________________________________________ > smokeping-users mailing list > [email protected] > https://lists.oetiker.ch/cgi-bin/listinfo/smokeping-users > >
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