[collectd] RRDs on SSD - performance degredation [resend without images]

[Thomas Harold]

On 8/16/2013 4:14 AM, Cyril Feraudet wrote:
> rrdcached is a daemon and a Collectd plugin who replace rrdtool plugin.
>
> There is no need to modify your architecture. Just install rrdcached and
> configure rrdcached Collectd plugin to work with.
>
> Before :
>
> LoadPlugin rrdtool
> <Plugin rrdtool>
>   DataDir "/var/lib/collectd/rrd"
> </Plugin>
>
> After :
> LoadPlugin rrdcached
> <Plugin rrdcached>
>   DaemonAddress "unix:/var/run/rrdcached/rrdcached.sock"
>   DataDir "/var/lib/collectd/rrd"
>   CreateFiles true
>   CollectStatistics true
> </Plugin>
>
> Cyril
>

How do you deal with the options:

RRARows 20000 # PDPs = timespan / (stepsize * rrarows)
RRATimespan 320000 # 3.7 days (16s)
RRATimespan 1600000 # 18.5 days (80s)
RRATimespan 8000000 # 92.6 days (400s)
RRATimespan 80000000 # 926 days / 30.5 months / 2.54 years (4000s)

Which are normally placed inside of <Plugin rrdtool></Plugin>?