Yes, 30 writes / s sounds a little bit poor. 

Maybe you could show your benchmark code? And what adjustments had to be done 
to the CF?

// Roger


On 18 mar 2010, at 19.03em, Martin Probst (RobHost Support) wrote:

> Hi,
> 
> we've tested the write performance on a single and dual node cluster and the 
> results are strangely poor. We've got about 30 inserts per second which seems 
> a little bit slow?! The strange about is, that the node's we've used 
> (single-cpu, 3gb ram, single disk) got a load of 0.02-0.05 while the inserts 
> run. There is no disk/network bottlenecks, no swapping. The insert-script 
> reads some values from stdin and inserts this values into cassandra. So it 
> seems thats the used thrift interface are the bootleneck (we've tested php, 
> perl, java, results a nearly the same). We've used version 0.5.1 and the 
> default config with adjusted ColumnFamilies.
> 
> Are there some hints or suggestions?
> 
> Cheers,
> Martin

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