[rrd-users] Re: [rrd-developers] RRDtool algorithms and IEEEmath compilerquestion

[Tobias Oetiker]

Today you sent me mail regarding Re: [rrd-users] Re: [rrd-developers]...:

*> However, I'm not using the graphing functionality of RRDtool; just the
*> database and archiving.  Another script runs nightly that grabs 24 hours
*> worth of data from the RRDtool databases and inputs it into a centrally
*> accessible Informix database.  Then, once a month, that data will be
*> queried and processed by a billing algorithm.  The requirement is that
*> utilization be stored in that database as bits per second.

then you should convert after the rrdtool phase ... this is fine ... 

*> I guess I'll just need to feed RRDtool bytes in and bytes out and
*> translate the averages from bytes per second into bits per second when I
*> transfer the data to the other database.  Not a big deal to implement,
*> obviously; it just seems like it would be common for users to want to see
*> bits per second even when doing a fetch.  ?

well the problem is that there is not realy a general solution for this wrap
round problem ... 
 
*> Also, I believe this means I will have to change the maximum allowable
*> calculated value for the DS from 2.048(1024^2) (the speed of an E1 line
*> in mbps) to the equivalent value in bytes per second, which is also not a
*> big deal but seems a bit kludgy.  ?

you can ask your snmp device ... it should tell you its max speed in octets
per second ...

*> BTW - I just saw that Alex van den Bogaerdt's RRDtool tutorial web page
*> has been updated and has a new section called "RRD under the Microscope"
*> that describes how RRDtool handles counter-wrapping and data
*> interpolation.  This is great.  I wish I'd noticed it before I pestered
*> you with some of my questions.

:-) 

cheers
tobi
*> 
*> Thanks.
*> 
*> Brett
*> 
*> --
*> Brett Sauer                     Network Management Engineer
*> cell/pgr:(612)889-6397          Central Operations
*> phone:(512)252-8590             WAM!NET Inc.
*> vmail:(651)256-5467             14437 Robert I. Walker Blvd
*> brett at wamnet.com                Austin, TX 78728
*> 
*> 
*> 

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