Hi Martin, Are you using a connection pool? I have been able to get about a 1000+ inserts with java code on one cassandra node with small values(100 bytes).
Tom On Thu, Mar 18, 2010 at 11:08 AM, Roger Schildmeijer <schildmei...@gmail.com > wrote: > 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 > > -- Tom Chen Software Architect GOGII, Inc t...@gogii.net 650-468-6318
