On Mon, 14 Jan 2013, Conrad Wood wrote:
I am looking for a solution to gather, correlate and graph large sets of
data.
The data is gathered from several hundred servers (going upto multi-1000
within 12 month).
Requirements are:
* 1 minute resolution of data
* individual graphs of a single value stream (e.g. IOPS for a given
block device)
* Graphs over a bunch of value streams (e.g. max IOPS per minute on
100ish block devices together)
* Data Retention in this resolution for 90 days
I looked at:
Collectd - missing data correlation and probably cannot handle large
amounts of data
Graphite/Carbon - missing data correlation
RRD - it averages data, which is *NOT* what I want. I need the absolute
MAX values in 1-Minute intervals
RRD can be configured to keep data is whatever resolution you want for whatever
time period you want. By default is averages things, but I've configured RRD
databases to have 1 min intervals and to keep that resoution for longer time
periods.
Whenyou create a RRD datastore, you tell it what time periods to use, and how
long to keep them for each time period. You also tell is if you want to store
MAX as well as average values for that series of data points.
That being said, RRD tool may not be the right answer for you. But it's worth
trying.
David Lang
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