Understanding and Optimizing Disk Access Patterns for Desktop VM loads a video from BriForum 2010

Most of the time your desktop feels slow, it is waiting on IO. Desktop workloads have a very different IO profile than server workloads, and require different optimization techniques and performance metrics.

Presenter: John Whaley

Most of the time your desktop feels slow, it is waiting on IO. Desktop workloads have a very different IO profile than server workloads, and require different optimization techniques and performance metrics. An optimized and tuned storage layer can be the difference between a desktop VM that runs silky smooth and one that runs like a dog.

This highly technical session will dlve deep into what typical desktop VM disk access workloads look like and how to measure IO performance in a way that mirrors the users' perception. You will learn the unique IO profiles of "typical" desktop activities like Windows boot, Outlook usage, Office and web browsing.

We will cover the performance impact of defrag in the guest and defrag on the host, on-the-fly compression and encryption, different IO caching policies, and special considerations for SSDs and flash memory. With a little bit of magic, it is even possible to achieve BTN ("Better Than Native") performance.

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