Bug#543631: [rrd-developers] Bug#543631: rrdupdate does not support floating point values with DERIVE, COUNTER
Florian Weimer <[email protected]>
| Newsgroups | gmane.linux.debian.devel.bugs.general,gmane.comp.db.rrdtool.devel |
|---|---|
| Message-ID | <[email protected]> |
* Tobias Oetiker: > OTOH with long long being available across the board, this might be > a bit of a anachronism ... not quite sure though, what happens when > you diff two doubles realy close to 2^64 ... does this stay > accurate enough ? I guess a little magic would still be needed > there ... care to investigate ? double is only exact up to about 2**52. long double goes till 2**63 (or beyond), but is not available everywhere. The precision issue was not apparent to me. We probably need to forcibly generate integer values for DERIVE and COUNTER in the application that feeds rrdtool. -- Florian Weimer <[email protected]> BFK edv-consulting GmbH http://www.bfk.de/ Kriegsstraße 100 tel: +49-721-96201-1 D-76133 Karlsruhe fax: +49-721-96201-99