Re: Performance tests using stress testing tool

2011-05-03 Thread Baskar Duraikannu
is in the neighbourhood of 10) Is this inline with what you usually see with Cassandra? - Original Message - From: Peter Schuller To: user@cassandra.apache.org Sent: Friday, April 29, 2011 12:21 PM Subject: Re: Performance tests using stress testing tool Thanks Peter. I am using

Re: Performance tests using stress testing tool

2011-04-29 Thread Baskar Duraikannu
Message - From: Peter Schuller To: user@cassandra.apache.org Sent: Thursday, April 28, 2011 1:21 PM Subject: Re: Performance tests using stress testing tool When I looked at the benchmark client machine, it was not under any stress in terms of disk or CPU. Are you running with the python

Re: Performance tests using stress testing tool

2011-04-29 Thread Peter Schuller
Thanks Peter. I am using java version of the stress testing tool from the contrib folder. Is there any issue that should be aware of? Do you recommend using pystress? I just saw Brandon file this: https://issues.apache.org/jira/browse/CASSANDRA-2578 Maybe that's it. -- / Peter Schuller

Re: Performance tests using stress testing tool

2011-04-28 Thread Peter Schuller
a) I am not seeing cpu usage more  than 10pct. Sounds like the benchmarking client is bottlenecking. In some of the forums, i see that 8 cpu 32 gb is considered as good sweet spot for cassandra. Is this true? Seems reasonable in a very general sense, but of course varies with use-case.

Re: Performance tests using stress testing tool

2011-04-28 Thread Baskar Duraikannu
To: user@cassandra.apache.org Sent: Thursday, April 28, 2011 2:34 AM Subject: Re: Performance tests using stress testing tool a) I am not seeing cpu usage more than 10pct. Sounds like the benchmarking client is bottlenecking. In some of the forums, i see that 8 cpu 32 gb is considered as good

Re: Performance tests using stress testing tool

2011-04-28 Thread Peter Schuller
When I looked at the benchmark client machine, it was not under any stress in terms of disk or CPU. Are you running with the python multiprocessor module available? stress should print a warning if it's not. If it's not, you'd end up with a threaded mode and due to Python's GIL you'd be