[rrd-developers] Specification of RRA Boundaries

Bush, Andrew G [NY] andrew.bush at lehman.com
Mon Aug 23 20:03:22 MEST 2004

Having searched the archives of both the development and user mailing
lists I am aware that this topic has come up several times.
>From the archives and documentation it is my understanding that RRA
boundaries occur at multiple step sizes from UTC.
As such whenever trying to general daily summaries the boundaries are
generated at midnight UTC.
Similarly when generating weekly values these seem to occur on a
Wednesday (1/1/1970 was a Thursday)
I am unfortunately working in multiple timezones both on the collection
side and visual display and am measuring discrete items such as fault
Therefore having the boundaries in the correct place is important.
In one mail thread it was suggested that it could be possible to base
the "origin" of the RRAs at the specified start of the RRD file rather
then UTC.
I guess, Is this still being considered / in the pipeline?
Do other people think this would be useful?
PS - I've been using RRDTOOL for years however am now only had to look
into this closely now as now have to think EST centric as well rather
then just GMT!!!!
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