Hi Andrew, Is this a normal behavior in m1.large instances? Does m1.xlarge work?
I am using the local storage of the instances (ephemeral disk in EC2 terminology). I picked m1.large because that was the "smallest" type of instance that has a high I/O performance listed. Thanks, Harold --- On Mon, 5/30/11, Andrew Purtell <[email protected]> wrote: > From: Andrew Purtell <[email protected]> > Subject: Re: How to improve HBase throughput with YCSB? > To: [email protected] > Date: Monday, May 30, 2011, 8:33 PM > The hypervisor steals a lot of CPU > time from m1.large instances. You should be using > c1.xlarge instances. > > Are you using local storage or EBS? > > Be aware that I/O performance on EC2 for any system is > lower than if you are using real hardware, significantly so > if not using one of the instance types with I/O performance > listed as "high". > > > 2011/5/30 Harold Lim <[email protected]> > > > > > Hi All, > > > > > > I have an HBase cluster on ec2 m1.large instance > (10 > > > region servers). > >
