On 4/25/07, Alex van den Bogaerdt <[EMAIL PROTECTED]> wrote: > On Wed, Apr 25, 2007 at 07:08:02PM +0200, Christoph Schwabl wrote: > > Hello, > > > > I get wrong (rounded) data with the rrdfetch command. > > No, you do not. At least not in your example (I'm sure some > rounding will occur, eventually, somewhere). > > > Is this normal? What should I do to correct this problem? > > You should RTFM http://oss.oetiker.ch/rrdtool/doc/rrdcreate.en.html > section on counter types. > > Also see my site for some more information. > > Delta_value is 54000000000 (because you say so!), delta_time is 900 > (because of timestamps 1177498800 and 1177497900), thus the computed > rate is 54000000000/900 = 60000000 = 6.0e+07
ABSOLUTE, COUNTER, and DERIVE data source types calculate a rate based on the time since the last update. If your input is already a rate, you should use the GAUGE data source type. GAUGE is used for things like temperature, cache size/usage, CPU utilization, disk usage, etc. Please see the details for the data source types in the rrdcreate documentation: http://oss.oetiker.ch/rrdtool/doc/rrdcreate.en.html -Sam _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
