33qvs wrote:Do you have any estimates on the total achievable bandwidth from your BU driver machines when you are running in the Amazon EC2 cloud?
The nominal bandwidth for an EC2 instance is 1 Gbps, but this is "expandable" based on the need.
What we have seen is that even the largest EC2 image running a fairly hefty load of BUs -- e.g. 100 per machine/user combination -- the I/O utilization rarely jumps above 3%.
While this is not a perfectly scientific response, we would recommend that I/O utilization/capacity is NOT an issue using this class of machine.
(This is another way of saying that, for EC2 instances, we have not been able to saturate any instance at the I/O usage level.)
The eValid Team
by 33qvs » Wed Sep 29, 2010 10:58 am