On Wed, 2011-06-15 at 13:29 -0700, Rick Jones wrote: > On Wed, 2011-06-15 at 14:49 -0500, Gary Gatten wrote: > > Good info. I don't use sflow right now but I'm sure I will in the near > > future. Too bad your agent isn't hooking to 64bit counters. > > Don't get too hung-up on sFlow - it is merely the messenger bringing > wrapping counters. RRD's response to those wrapping counters (via use > of DERIVE) is what leads to the drops. > > > So I guess the simple fix would be to sample every 10secs? Or, are u > > saying ANY time you encounter a wrap the derive function will fail? > > I believe there is an issue any time there is a wrap while using > DERIVE,min=0. Notice the dips ~35 seconds apart on center in the graph > when getting samples every 2 seconds, and then similar dips with 10 > second sampling.
although... that does beg the question as to why those are dips and not complete drops... rick _______________________________________________ Ntop mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop
