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From "Baskar Duraikannu" <baskar.duraikannu...@gmail.com>
Subject Re: Performance tests using stress testing tool
Date Wed, 04 May 2011 00:00:33 GMT
Thanks Peter. 

I believe...I found the root cause. Switch that we used was bad. 
Now on a 4 node cluster ( Each Node has 1 CPU  - Quad Core and 16 GB of RAM), 
I was able to get around 11,000 writes and 10,050 reads per second simultaneously (CPU usage
is around 45% on all nodes. Disk queue size 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 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

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