On 9/17/10 7:41 AM, Jedd Rashbrooke wrote:
Happy times. This was when the cluster
was modestly sized - 20-50GB. It's now about 200GB, and
performance has dropped by an order of magnitude - perhaps
5-6 hours to do the same amount of work, using the same
codebase and the same input data.
You don't mention which version of the deb package you're using, but :
https://issues.apache.org/jira/browse/CASSANDRA-1214
Is a performance hit which occurs as a result of the growth in data
size, and could be your issue.
Have you checked for swapping behavior like the above while your system
is unhappy?
=Rob
