You may need to strip out the NaN lines - there will be (potentially) 1000s of them in the RRAs. I usually use:
Rrdtool dump zzzz.rrd | grep -v NaN >zzzz.dump The rollup of NaNs is what can cause some 'loss' of data (I wrote about this in the ntop & RRD paper posted @ SourceForge). As for 19 hours, it's probably a value of ZERO for the Unix epoch i.e. 0 hours on 1/1/1970, which is then automatically translated to your local time. You are in zone -5 (EST5EDT maybe)? -----Burton -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Tuesday, March 21, 2006 11:24 AM To: [email protected] Subject: RE: [Ntop] RRD Graph > Wed Dec 31 19:00:00 1969 I don't understand from where Ntop get this information date because ntpd is installed and running properly on this server and sync time with time server correctely. > If you've got 146 points I don't see any 146 points anywhere when a run -> rrdtools dump fragmentedIpBytes.rrd Gerhard, > Actually, I think this part > > Wed Dec 31 19:00:00 1969 > > is more important. > > Use rrdtools dump function (you may need to install the full rrd tools > package to get it) and look at what's in the RRAs. If you've got 146 > points spread across 46 years, something is really wrong... > > -----Burton > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf > Of [EMAIL PROTECTED] > Sent: Monday, March 20, 2006 12:59 PM > To: [email protected] > Subject: RE: [Ntop] RRD Graph > >> Check the log for error messages. > I've checked the log and there is no error. > >> Also there is a feature in the plugin to create arbitrary graphs - >> use > it to try and make a graph against a .rrd file you know is there. > This is my result: > For: /var/lib/ntop/rrd/interfaces/eth0/fragmentedIpBytes.rrd > Sample date/time Value > Notes > > * 0 data points reported, 146 skipped > * Found Wed Dec 31 19:00:00 1969 (0) as the first (detail) data point > * Fetch found Sun Feb 5 18:30:00 2006 (1139182200) as the last > data point > * Step is 300 seconds > > This request is roughly equivalent to: rrdtool fetch --start now-12h > --end now /var/lib/ntop/rrd/interfaces/eth0/fragmentedIpBytes.rrd > AVERAGE | grep -v nan > > I think this part is important here -> 0 data points reported, 146 > skipped > > Gerhard, > >> >> -----Burton >> >> -----Original Message----- >> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf >> Of [EMAIL PROTECTED] >> Sent: Monday, March 20, 2006 12:03 PM >> To: [email protected] >> Subject: [Ntop] RRD Graph >> >> Hello, >> >> Since I'm using Ntop version 3.2 all rrd graphs are no longer graphed. >> I can see that data are still present, I can also see that related >> files on the server under the /var/lib/ntop dir are created and >> available but no graph are displayed and the graph are always empty. >> The rrdplugins is set to yes and activated, so I've no idea why this >> happen with this version of Ntop (3.2). >> >> Gerhard, >> >> _______________________________________________ >> Ntop mailing list >> [email protected] >> http://listgateway.unipi.it/mailman/listinfo/ntop >> >> _______________________________________________ >> Ntop mailing list >> [email protected] >> http://listgateway.unipi.it/mailman/listinfo/ntop >> > > > _______________________________________________ > Ntop mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop > > _______________________________________________ > Ntop mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop > _______________________________________________ Ntop mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop _______________________________________________ Ntop mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop
