--- Matt Massie <[EMAIL PROTECTED]> wrote: > what is the maximum size of an rrd that you would tolerate? what is > a > reasonable size? it is currently 11948 bytes per metric and double > that > for summary metrics. > > that means that a 128 node cluster monitoring 30 metrics each would > take > about 11948*128*30 + 11948*2*30 = 44.5 MBs. tiny. > > i'd like to expand the size of the round-robin databases to around > 70620 bytes per metric. that means that a 128 node cluster > monitoring > 30 metrics each would take around > 70620 * 128 * 30 + 70620*2*30 = 262 MBs. small. > > it would allow hourly averages for a year. it would give you the > power > to ask.. what going on last week with more fine-grain accuracy. > > keep in mind that the disk io is not going to go up.. it will drop > significantly given the new design. > > -matt > Matt,
definitely a great idea. Fine granularity over a longer time is something that we lack today.For example, I personally would love to have the resolution that is in the hourly statistics for a whole day. As others have said, making it configurable would be a plus. For some some diskspace does not matter, for others it does. And what I did not see mentioned: if implemented, will it be possible to use/convert old databases to the new granularity? B^hCheers Martin ===== ------------------------------------------------------ Martin Knoblauch email: k n o b i AT knobisoft DOT de www: http://www.knobisoft.de
