Hi Scott,
On Sun, Jul 09, 2006 at 04:02:32PM -0400, Scott Walters wrote:
The question then becomes "what's a suitable max" for these data ? Should I assume they are 32-bit counters ? I know some of them are not (e.g. Solaris has 64-bit counters for bytes in/out per interface).
exactly, and it is even more complicated than that . . . see below [snip explanation] And Henrik, the net result to you will be answering an endless stream
of emails regarding why every COUNTER RRD has spikes . . . I've been
there, done that ;) I am almost 100% positive there is not *one*
counter RRD in the larrd stuff, all DERIVE. It's not impossible
rrdtool has changed to alleviate some of this, but from what I have
read of your email streams it I haven't seen anything to support that.
Your experience certainly carries a lot of weight. Since I've never used any COUNTER datasets I haven't seen this problem (you're right: all the LARRD DS definitions use DERIVE - I copied those just about verbatim into Hobbit).
So - I've undone the change. Back to DERIVE with MIN=0, and we'll see how much trouble that gives us. So far, only one person has noticed bad effects from this.
Thanks, Henrik