Where is the bottleneck? See http://spyced.blogspot.com/2010/01/linux-performance-basics.html

On Thu, Jun 2, 2011 at 11:18 AM, Nir Cohen <nir@similargroup.com> wrote:

Hi all,

Recently we have upgraded our Cassandra servers to version 0.7.6-2 from 0.6.6

We are experiencing a severe performance issues we must restart the Cassandra servers every half hour (otherwise our apps servers can't connect to the Cassandra servers).

Each Cassandra server has 2 SSD drives (one for data and one for commit log),

The amount of the read per second for each server is 500.

We haven't experienced those issues in 0.6.6

Do you have any ideas?

Kind regards,



Nir Cohen

Co-Founder & CTO

(+972) 54-242-8419

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Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support