Group Blog Posts

Comparing CPU Throughput of Azure and AWS EC2

After observing CPU core sharing with Amazon Web Services EC2, I thought it would be interesting to see if Microsoft Azure platform exhibits the same behavior. Signing up for Azure’s 30-day trial gives $200 in credit to use over the next 30-day period: more than enough for this kind of testing. Creating a new virtual…

vCPU sharing in EC2: HVM to the rescue?

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I’ve been doing some testing to clarify what a vCPU in Amazon Web Services actually is. Over the course of the testing, I experienced inconsistent results on a 2-thread test on a 4-vCPU m3.xlarge system, due to the mislabeling of the vCPUs as independent single-core processors by the Linux kernel. This issue manifests itself in…

Oracle RAC on the Cloud, Part 3

This is part 3 of a multipart series of getting oracle RAC running on a cloud environment. In part 1, we set up a NFS server for shared storage. In part 2, we set up OS components for each RAC server. Now we finish up the OS configuration and move to Oracle grid infrastructure.

Oracle RAC on the Cloud, Part 2

In part 1 of this series, we talked about some of the challenges of setting up Oracle RAC on a public cloud provider, and went on to order some VMs from provider Gandi, and finally configuring a NFS server for shared storage. In this post, we move on to configuring the rac servers themselves, rac01 and rac02.

Oracle RAC on the Cloud, Part 1

I’ve been working on moving a lot of the testing and R&D work I do away from local virtual machines and onto cloud environments, for a few reasons: I can avoid carrying around a laptop all the time, and rather log onto the cloud wherever I happen to be It’s easy to scale down and…

IOUG Collaborate 2013 Wrap-Up

Personal highlights from Collaborate 2013 in Denver. Discussion of networking with old and new friends, technical sessions (performance forecasting and multi-block read internals) and the Pythian RAC Attack class.

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