On Friday 28 October 2011 18:36:04 Poil wrote: > Hi, > > We have a thousand servers collected on our first collectd server node > The interval is set at 60 on every server > > Our load average is about 3, with a lot off wait-io. > The raid 10 volume is composed by 8 drives at 15 000 tour per minutes, > the raid card has got 512Mb cache which is enable in write-back mode > > Our current rrdfile settings : > CacheFlush 200 > CacheTimeout 120 > > Before we had this > CacheFlush 120 > WritesPerSecond 100 > > I've seen no change in our load average/io-wait. > > Have-you got any idea for reducing my io-wait ? > > Best regards, > Benjamin
Hi Benjamin, I believe that rrdcached is designed to lower IO load. The plugin is quite easy to configure and I suggest to try it. Regards, Toni
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