We have not started our JVM's with numactl.
I am not sure what (if any) benefit there has been to turning on NUMA in the
BIOS. Turning it on could have in fact reduced performance. I suspect that
Java is only using memory from one of the processors (since less than half
of the physical memory is
Eric,
Thanks for the detailed post! Did you need to start your JVMs with numactl
in order to take advantage of NUMA?
I know the board, OS and JVM must be configured properly, but it's not
clear if the JVMs must be started with numactl.
Thanks,
David
From: Eric Rosenberry [mailto:epros...@g
remove
All-
Over the past nine months I have been working to tune our hardware
configuration to optimally balance CPU/RAM/disk/iops/network per node for
our Cassandra workload. Thanks much to those here who have provided helpful
advice.
I wanted to share back to the community some of the learnings we h
remove
Hello, Jonathan,
Thank you for your kind reply. Could you give me some more
opinions/comments?
From: "Jonathan Ellis"
> (b) Cassandra generates input splits from the sampling of keys each
> node has in memory. So if a node does end up with no data for a
> keyspace (because of bad OOP balancing
I would prefer to use http://groups.google.com/group/phpcassa to help keep
this list focused.
Thanks for the question.
- Tyler
On Sun, Oct 24, 2010 at 6:25 AM, Jeremy Hanna wrote:
> Would you like feedback/questions on here or are you going to be using
> http://groups.google.com/group/phpcassa?
Would you like feedback/questions on here or are you going to be using
http://groups.google.com/group/phpcassa?
On Oct 23, 2010, at 8:26 PM, Tyler Hobbs wrote:
> Hello all,
>
> I've been working for a while now on putting together a PHP client that works
> with Cassandra 0.7. It's at a decent
