Hi Tom, no we're not using a connection pool, only pure java on cmd.
Cheers, Martin Am 18.03.2010 um 19:18 schrieb Tom Chen: > 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
