Hi Bostjan, Mariusz and everybody else ;) On Wed, Sep 29, 2010 at 02:47:08PM +0200, XANi wrote: > Dnia 2010-09-29, śro o godzinie 03:09 +0200, Bostjan Skufca pisze: > > Maybe it's time to make a script for automated dump/change obviously > > invalid data to NaN/import of rrds.
What's obvious to you is not obvious for a script. So I'm afraid you'll be stuck with some manual tuning or write a script specifically suited for your needs. > > Do you know how why it was not DERIVE specified at rrd creation? > Datatype was not DERIVE probably because mysql plugin (as many other) > is much older than actual DERIVE support in collectd :) 100% right: Support for DERIVE was added relatively late – much later than the MySQL plugin. The next major version, version 5.0, will likely convert most of the COUNTER data sources to DERIVE – it's the better default in most cases. > > Probably I should consult google and manuals for this, but: is there > > an easy way to change from COUNTER to DERIVE or do I have to dump > > and reload the data? > As for changing counter to derive, simple rrdtool dump to xml file and > find/replace should be enougth That's too complicated. You can use "rrdtool tune" (rrdtune(1)) to do this without much hassle: rrdtool tune mysql_commands-select.rrd --data-source-type value:DERIVE Regards, —octo -- Florian octo Forster Hacker in training GnuPG: 0x0C705A15 http://octo.it/
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