Depends on your rrdcached config. My experience with collectd+rrdcached: I set it up, but I noticed it caused spikes in IOPS which blurred interesting events on servers. Therefore I switched back and settled for constant 10 IOPS.
I use it successfully for ganglia though, with arguments "-w 10800 -z 3600 -f 36000 -t 10". b. On 13 August 2012 12:34, Jeremy MAURO <[email protected]> wrote: > Hi everyone, > > > I have a quick question for everybody, does anyone use colletcd+rrdcached? > > > Because I tried to setup the rrdcached pluding to stop using rrdtools > plugin but when I do so the server is just under heavy IO load. Normally > with rrdtool plugin the load is about 2-3 (See the attachment). > > > But when I try to activate the rrdcached the server is just unusable, the > load is about 25 (for a 16 CPUs) but I have something like 30% of IO wait. > > > Everything is on debian squeeze: collectd(4.10.1-1+squeeze2)/rrdcached( > 1.4.3-1) > > > > Any idea why something that is supposed to reduce load is dramatically > increasing it? > > > > -- > Cordialement, > Jeremy MAURO > > > Jeremy MAURO ([email protected]) - Ingénieur Systémes et Réseaux > Antidot - Solutions de recherche d'information > 29 avenue Jean Monnet, 13410 LAMBESC (FRANCE) > Tel: (+33) 4 42 63 67 90 / Fax: (+33) 4 42 28 61 03 > > > _______________________________________________ > collectd mailing list > [email protected] > http://mailman.verplant.org/listinfo/collectd > >
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