On 06/26/2012 06:46 AM, Tobias Oetiker wrote: > Hi Michael, > > I am not aware of such an extension, but changes might actually not > be all that difficult ... > > I guess turning the step parameter from seconds into milli seconds > would be all that is required ... there would still be enough > head-room above > > unfortunately such an extension would require a change in rrdtool > data format which makes it difficult to fold this back into > mainline ... but for your research the patch should be fairly > simple ...
If the units for step were reduced to milliseconds, wouldn't it also be a good idea to extend the allowed data input timestamp from milliseconds to microseconds? rick jones > > cheers > tobi > > > Today mljub...@gmx.net wrote: > >> Hello, >> >> I am researching rrd-[developers|users] archives whether someone have >> done the extension of the RRD tool for milliseconds/sub-second stepping >> (e.g., --step 500ms) in the past? >> >> To date I found some mail threads with references to the subject but >> without an explicit success mark. >> >> Using this sub-second extension, I want to research mechanical gearboxes >> installed on remote sites in the field collecting the analogue data from >> gearbox' sensors in an RRA over 1 year via site local network. A gearbox >> aggregate has something like 150 data sources. (~50) of them need to be >> recorded with 100ms step. The system, I have in mind should work >> off-line/autonomously. >> >> With best regards, >> >> Michael >> >> _______________________________________________ >> rrd-developers mailing list >> rrd-develop...@lists.oetiker.ch >> https://lists.oetiker.ch/cgi-bin/listinfo/rrd-developers >> >> > _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users