[collectd] High load

[Toni Ylenius]

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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