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Four mistakes that can kill virtual machine performance
This article is part of the Virtual Data Center issue of January 2010, Vol. 18
Ah, how I love the easy ones. In many cases, the easiest mistakes cause some of the biggest performance problems in virtualization environments. In my consulting, I've seen a few major errors that are worth sharing. Some of these may seem obvious, but consider checking your settings. You may be surprised at what you find. Easy Mistake 1: Virtual machine screensavers Screensavers are an absolute requirement for desktops in the hallways of our brick-and-mortar offices. They ensure that a user who walks away from his computer returns to one that has been secured against prying eyes. Screensavers can also provide protection in data centers. If screensavers on servers activate and lock the console after a few minutes of inactivity, they can protect that environment from an intruder who gains physical access. But screensavers are a quiet consumer of processor resources. No matter how insignificant that screensaver seems, the processor power required to draw the pipes crawling across the screen or to scroll your favorite company slogan...
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Features in this issue
IT professionals demand the increasing utilization and flexibility that virtualization and cloud technologies provide.
Screensavers, managing from the console, real-time security scans and certain Windows Server power options can all undermine virtual machine performance. Here's how to avoid VM performance killers.
Virtualizing your infrastructure can save money on labor and server lifecycle maintenance. With fewer physical servers, there's less to provision, monitor and maintain manually.