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Posted to user@cassandra.apache.org by Donna Li <do...@utstar.com> on 2011/07/06 07:51:46 UTC
memory
All:
For a rough rule of thumb, Cassandra's internal datastructures will
require about memtable_throughput_in_mb * 3 * number of hot CFs + 1G +
internal caches.
Why cassandra need so much memory? What is the 1G memory used for?
Best Regards
Donna li
Re: memory
Posted by Aaron Morton <aa...@thelastpickle.com>.
That advice is a little out of date, specially in the future world of 0.8 memory management, see http://thelastpickle.com/2011/05/04/How-are-Memtables-measured/
Cheers
-----------------
Aaron Morton
Freelance Cassandra Developer
@aaronmorton
http://www.thelastpickle.com
On 6/07/2011, at 5:51 PM, Donna Li <do...@utstar.com> wrote:
> All:
> For a rough rule of thumb, Cassandra's internal datastructures will require about memtable_throughput_in_mb * 3 * number of hot CFs + 1G + internal caches.
>
> Why cassandra need so much memory? What is the 1G memory used for?
>
>
> Best Regards
> Donna li