If you have not seen it already, checkout the Netflix blog post on their performance testing of AWS SSD instances.

http://techblog.netflix.com/2012/07/benchmarking-high-performance-io-with.html

My guess, based on very little experience, is that you will be CPU bound.

On 04/12/2013 03:05 AM, Jabbar Azam wrote:
Hello,

I'm going to be building a 20 node cassandra cluster in one datacentre. The spec of the servers will roughly be dual core Celeron CPU, 256 GB SSD, 16GB RAM and two nics.


Has anybody done any performance testing with this setup or have any gotcha's I should be aware of wrt to the hardware?

 I do realise the CPU is fairly low computational power but I'm going to assume the system is going to be IO bound hence the RAM and SSD's.


Thanks

Jabbar Azam


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Colin Blower
Software Engineer
Barracuda Networks Inc.
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