----- Original Message ---- > From: aurbain <[EMAIL PROTECTED]> > To: Martin Knoblauch <[EMAIL PROTECTED]> > Cc: [EMAIL PROTECTED]; ganglia general <ganglia-general@lists.sourceforge.net> > Sent: Tuesday, February 26, 2008 8:25:13 PM > Subject: Re: [Ganglia-general] Need a script to remove "spikes" from network > RRDs > > I'm getting these spikes in multiple boxes, specifically the ones which > do a lot of network traffic. RHEL4u[4,6], ganglia 2.0.6 > > Perhaps a rollover bug in the network code in gmond? >
That was the first thing I suspected and I have since modified the overflow mechanism in my development version to just ignore samples when the overflow happens. After instrumentation it showed that the data in /proc/net/dev was bogus. This is due to this: http://www.mail-archive.com/[EMAIL PROTECTED]/msg59062.html Happens only on 64-bit systems. Now, my fix kills the generation of the spikes, but my RRD database is now tainted for another 12 month. Cheers Martin > > Martin Knoblauch wrote: > > Hi, > > > > one of my clusters has, due to flakey hw/driver combination, spikes in the > PB/sec range in the network metrics. This makes viewing the larger timescales > pretty much useless (for the next week, month, year) . Does anybody have a > script to "repair" such rrds? Which of the fields need to be touched? > > > > Cheers > > Martin > > ------------------------------------------------------ > > Martin Knoblauch > > email: k n o b i AT knobisoft DOT de > > www: http://www.knobisoft.de > > > > > > > > ------------------------------------------------------------------------- > > This SF.net email is sponsored by: Microsoft > > Defy all challenges. Microsoft(R) Visual Studio 2008. > > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > > _______________________________________________ > > Ganglia-general mailing list > > Ganglia-general@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/ganglia-general > > > > ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Ganglia-general mailing list Ganglia-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-general
