Comments on: Under-provisioning: the curse of the cloud http://www.xaprb.com/blog/2010/06/01/under-provisioning-the-curse-of-the-cloud/ Stay curious! Thu, 09 Feb 2012 09:56:43 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Xaprb http://www.xaprb.com/blog/2010/06/01/under-provisioning-the-curse-of-the-cloud/#comment-18382 Xaprb Thu, 03 Jun 2010 15:16:30 +0000 http://www.xaprb.com/blog/?p=1884#comment-18382 I think we need to do away with "Green" and bring back "The ecology." I think we need to do away with “Green” and bring back “The ecology.”

]]> By: Jay Pipes http://www.xaprb.com/blog/2010/06/01/under-provisioning-the-curse-of-the-cloud/#comment-18381 Jay Pipes Thu, 03 Jun 2010 15:03:27 +0000 http://www.xaprb.com/blog/?p=1884#comment-18381 Hi Baron! Yep, fully agree with your assessments (and Theo's FTM). I completely agree that the cloud has been over-hyped, at least in areas of marketing to people that don't understand its use cases. But, such is the nature of technical marketing (Web 2.0 anyone?) Cheers! jay Hi Baron!

Yep, fully agree with your assessments (and Theo’s FTM).

I completely agree that the cloud has been over-hyped, at least in areas of marketing to people that don’t understand its use cases. But, such is the nature of technical marketing (Web 2.0 anyone?)

Cheers!

jay

]]> By: Xaprb http://www.xaprb.com/blog/2010/06/01/under-provisioning-the-curse-of-the-cloud/#comment-18379 Xaprb Wed, 02 Jun 2010 23:33:13 +0000 http://www.xaprb.com/blog/?p=1884#comment-18379 Josh, yes. Single-core performance (and single-node performance) matters a lot, and that isn't always clear to people who are thinking about cloud deployments. Josh, yes. Single-core performance (and single-node performance) matters a lot, and that isn’t always clear to people who are thinking about cloud deployments.

]]> By: Josh Berkus http://www.xaprb.com/blog/2010/06/01/under-provisioning-the-curse-of-the-cloud/#comment-18378 Josh Berkus Wed, 02 Jun 2010 23:11:14 +0000 http://www.xaprb.com/blog/?p=1884#comment-18378 Baron, There's a further problem with the limited performance of cloud VMs, which is that the ceiling on performance is relatively low. That is, in an individual cloud VM I can't even get the throughput I'd get off a mid-priced 1U server EC2, for example, tops out at rather slow 7 vcores. So provisioning correctly requires moving to a level of horizontal scalability an order of magnitude larger than would be required on colo servers. Which would be fine if horizontal scaling of databases was perfectly linear, but of course it isn't. Baron,

There’s a further problem with the limited performance of cloud VMs, which is that the ceiling on performance is relatively low. That is, in an individual cloud VM I can’t even get the throughput I’d get off a mid-priced 1U server EC2, for example, tops out at rather slow 7 vcores. So provisioning correctly requires moving to a level of horizontal scalability an order of magnitude larger than would be required on colo servers. Which would be fine if horizontal scaling of databases was perfectly linear, but of course it isn’t.

]]> By: Xaprb http://www.xaprb.com/blog/2010/06/01/under-provisioning-the-curse-of-the-cloud/#comment-18377 Xaprb Wed, 02 Jun 2010 20:42:05 +0000 http://www.xaprb.com/blog/?p=1884#comment-18377 Morgan, I think you're talking about this (from the end of http://aws.amazon.com/ec2/instance-types/): <blockquote>Amazon EC2 provides virtualized server instances. While some resources like CPU, memory and instance storage are dedicated to a particular instance, other resources like the network and the disk subsystem are shared among instances. If each instance on a physical host tries to use as much of one of these shared resources as possible, each will receive an equal share of that resource. However, when a resource is under-utilized you will often be able to consume a higher share of that resource while it is available.</blockquote> Morgan, I think you’re talking about this (from the end of http://aws.amazon.com/ec2/instance-types/):

Amazon EC2 provides virtualized server instances. While some resources like CPU, memory and instance storage are dedicated to a particular instance, other resources like the network and the disk subsystem are shared among instances. If each instance on a physical host tries to use as much of one of these shared resources as possible, each will receive an equal share of that resource. However, when a resource is under-utilized you will often be able to consume a higher share of that resource while it is available.

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