Hi Thomas, Today Thomas Klein wrote:
> Hello, > > is there a more detailed explanation available how SmokePing does draw the > smoke into the graphs? > I have looked into "Reading the Graphs" from the documentation, but miss some > details: > > For every round of measurement smokeping sends several packets. It then sorts > the different round trip times and selects the median, (ie. the middle one). > This means when there are 10 time values, value number 5 is selected and > drawn. The other values are drawn as successively lighter shades of gray in > the background (smoke). > > How can i find out what the smoke will look for such example values where the > median will be always 5? the median is NOT always 5 ... the values get sorted and then the middle one is picked ... the medians would look like this: > > Nr. Val1 Val2 Val3 Val4 Val5 median > 1 1 1 5 4 1 1 > 2 2 2 5 5 1 2 > 3 3 5 5 5 1 5 > 4 4 5 5 5 1 5 > 5 5 5 5 5 5 5 > 6 6 5 5 5 5 5 > 7 7 5 5 9 5 5 > 8 8 5 5 9 5 5 > 9 9 5 9 9 5 9 > 10 10 5 10 9 5 9 > > I have noted that my latency measurements tend to have more smoke above the > median measurement than below and wonder what this does mean and how to > interprete the graphs. if more smoke is above than below (which is normally the case for ping latencies) that means that every now an then a packet is takes longer than most of the others ... but no packet is faster than any of the others. cheers tobi > > Greetings, > Thomas > -- Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland http://it.oetiker.ch [email protected] ++41 62 775 9902 / sb: -9900 _______________________________________________ smokeping-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/smokeping-users
