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 us
> 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
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 wi
> 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 bottle
: 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 cons
> 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.
I have setup 4 node cluster for testing and all of them have around 25gb of
data.
I ran a read and write tests using 100 and 200 threads with each thread
reading or writing 50 columns with quorum consistency using stress tool
against 4 nodes
Test servers have 4 cores and 16gb of ram.
While runni
