No takers? :-) Am I missing something too obvious?

On Tue, Aug 17, 2010 at 2:03 PM, George Stathis <gstathis@gmail.com> wrote:

> Hello,
>
> We have just setup a new cluster on EC2 using Hadoop 0.20.2 and HBase
> 0.20.3. Our small setup as of right now consists of one master and four
> slaves with a replication factor of 2:
>
> Master: xLarge instance with 2 CPUs and 17.5 GB RAM - runs 1 namenode, 1
> secondarynamenode, 1 jobtracker, 1 hbasemaster, 1 zookeeper (uses its' own
> dedicated EMS drive)
> Slaves: xLarge instance with 2 CPUs and 17.5 GB RAM each - run 1 datanode,
> 1 tasktracker, 1 regionserver
>
> We have also installed Ganglia to monitor the cluster stats as we are about
> to run some performance tests but, right out of the box, we are noticing
> high system loads (especially on the master node) without any activity
> happening on the clister. Of course, the CPUs are not being utilized at all,
> but Ganglia is reporting almost all nodes in the red as the 1, 5 an 15
> minute load times are all above 100% most of the time (i.e. there are more
> than two processes at a time competing for the 2 CPUs time).
>
> Question1: is this normal?
> Question2: does it matter since each process barely uses any of the CPU
> time?
>
> Thank you in advance and pardon the noob questions.
>
> -GS
>