Hello, I've been running MRTG and storing values in log files for the past few years and have recently decided to transition the logs to RRD databases.
With this in mind, I set up another copy of MRTG with the same config but have it writing to RRDs rather than log files. I ran both the log and RRD versions of MRTG side-by-side for the last two months and have noticed something strange- the RRD values are *always* lower than the log values for the same interface. This is happening across multiple devices and all types of interfaces (10mb, 100mb, and 1000mb ethernet, serial interfaces, ds3s, etc). After dumping out the RRD database with 'rrdtool fetch' and comparing the data points with the log file, the timestamps on entries are very close (within 10 seconds) but the RRD's recorded value is always lower. I would understand if this happened occasionally due to the wave nature of bandwidth graphs but to have every value be lower in the RRD seems off. Has anyone else seen this happen? Regards, William Cassis [EMAIL PROTECTED] _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
