• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

Yellow Bricks

by Duncan Epping

  • Home
  • ESXTOP
  • Stickers/Shirts
  • Privacy Policy
  • About
  • Show Search
Hide Search

vSphere CPU Scheduler whitepaper, this is it!!

Duncan Epping · Aug 13, 2009 ·

This is the whitepaper I’ve been waiting for. By now we all know that the CPU Scheduler has changed. The only problem is that there wasn’t any official documentation about what changed and where we would benefit. Well this has changed. VMware just published a new whitepaper titled “The CPU Scheduler in VMware® ESX™ 4“.

The CPU scheduler in VMware ESX 4 is crucial to providing good performance in a consolidated environment. Since most modern processors are equipped with multiple cores per processor, systems with tens of cores running hundreds of virtual machines are common. In such a large system, allocating CPU resource efficiently and fairly is critical. In ESX 4, there are significant changes to the ESX CPU scheduler that improve performance and scalability. This paper describes these changes and their impact. This paper also provides details of the CPU scheduling algorithms in the ESX server.

I can elaborate all I want but I need you guys to read the whitepaper to understand why vSphere is performing a lot better than VI 3.5. (I will give you a hint: “cell”.)

Another whitepaper that’s definitely worth reading is “Virtual Machine Monitor Execution Modes: in VMware vSphere 4.0“.

The monitor is a thin layer that provides virtual x86 hardware to the overlying operating system. This paper contains VMware vSphere 4.0 default monitor modes chosen for many popular guests running modern x86 CPUs. While most workloads perform well under these default settings, a user may derive performance benefits by overriding the defaults. The paper examines situations where manual monitor mode configuration may be practical and provides two ways of changing the default monitor mode of the virtual machine in vSphere.

And while you arealready taking the time off to educate yourself you might also want to read the “FT Architecture and Performance” whitepaper. Definitely worth reading!

Share it:

  • Tweet

Related

Server, Various ESX, esxi, ft, performance, vSphere, whitepaper, whitepapers

Reader Interactions

Comments

  1. Hany Michael says

    13 August, 2009 at 09:51

    I’ve seen a couple of “tweets” exchanged between you and the legendary Scott Drummonds on twitter about it few weeks back, and I’ve been dying to read this White Paper since then.

    Thanks for pointing out the “VMM modes WP” as well. It is going to be an exciting reading today!

  2. просто says

    15 August, 2009 at 12:07

    Thanks for pointing out the “VMM modes WP” as well. It is going to be an exciting reading today!

  3. NiTRo says

    18 August, 2009 at 20:06

    Thanks Duncan, the FT part is really instructive

  4. Frantisek Ferencik says

    26 November, 2012 at 16:45

    Hi,
    some updated version of “Virtual Machine Monitor Execution Modes: in VMware vSphere 4.0“?

Primary Sidebar

About the author

Duncan Epping is a Chief Technologist in the Office of CTO of the Cloud Platform BU at VMware. He is a VCDX (# 007), the author of the "vSAN Deep Dive", the “vSphere Clustering Technical Deep Dive” series, and the host of the "Unexplored Territory" podcast.

Upcoming Events

29-08-2022 – VMware Explore US
07-11-2022 – VMware Explore EMEA
….

Recommended Reads

Sponsors

Want to support Yellow-Bricks? Buy an advert!

Advertisements

Copyright Yellow-Bricks.com © 2022 · Log in