On Fri, Feb 14, 2003 at 10:15:16AM -0500, Matt Zimmerman wrote: >On Fri, Feb 14, 2003 at 02:53:20PM +0100, Dariush Pietrzak wrote: > >> nice.. but design behind whole mrtg/rrdtool makes them useless in many >> situations -> for example, try comparing trends in two julys from >> different years.. you can't, can you.. ) > >Of course you can, as long as you set up your RRDs at the start to hold all >of the data that you will want. RRDs do not expand once they are created, >so once it wraps and starts to overwrite old data, it is lost.
RRDs are designed not to grow, hence the "Round Robin" they are not intended to archive historical data, but you could always save a png for the prior month at the first day of the month and compare the pictures later... // George -- GEORGE GEORGALIS, System Admin/Architect cell: 347-451-8229 Security Services, Web, Mail, mailto:[EMAIL PROTECTED] Multimedia, DB, DNS and Metrics. http://www.galis.org/george
