Feeds

Red Hat sprints past ESX on VM running

Oh Qumranet all ye faithful

Remote control for virtualized desktops

Red Hat claims it can run five virtual machines (VMs) for every three that VMware's ESX runs in the same server hardware. Qumranet technology also enables it to run more Windows virtual desktops than VMware, too.

At a journalists' roundtable in London this week, Benny Schnaider, Qumranet CEO, said his - now Red Hat's - company's KVM (kernel-based virtualisation machine) hypervisor runs 52 VMs in a physical server, in which ESX can host a maximum of 35 VMs. Citrix Xenserver is worse: it can only host 30.

There are two reasons why KVM is better than ESX, according to Schneider.

First, KVM is newer code: when it started being designed four years ago Intel and AMD were already extending their processor instruction sets to add virtualization-supporting instructions. Early hypervisors like ESX had to cope with the previous generation of CPU chips, which had no virtualisation support, and so were larger and made less efficient use of server resources.

In other words, VMware is held up by legacy code baggage, and Qumranet is not, or so Red Hat says.

Second, Windows needs lots of memory and is a bulky VM in RAM terms, according to Schneider. He hinted that KVM can reduce this Windows VM memory burden, freeing up RAM for other VMs.

Qumranet also provides Red Hat VDI (virtual desktop infrastructure) technology, which supports more remote desktops and gives the users a better experience because of its SPICE rendering technology. It compresses the desktop data stream better and enables a Linux server to be a better Windows VDI host than a VMware or Citrix Xenserver server. Red Hat CTO Brian Stevens acknowledged that it's a little odd that Red Hat's desktop strategy is now focused on the virtualized Windows desktop.

Paul Cormier, Red Hat's SVP for engineering, said Red Hat's strategy is to enable customers to virtualise everywhere if they so choose, from the Android cell phone to the desktop. He probably doesn't mean we'll be able to run Vista on Android, though.

Learn more about KVM here (pdf). ®

Top 5 reasons to deploy VMware with Tegile

More from The Register

next story
Just don't blame Bono! Apple iTunes music sales PLUMMET
Cupertino revenue hit by cheapo downloads, says report
The DRUGSTORES DON'T WORK, CVS makes IT WORSE ... for Apple Pay
Goog Wallet apparently also spurned in NFC lockdown
IBM, backing away from hardware? NEVER!
Don't be so sure, so-surers
Hey - who wants 4.8 TERABYTES almost AS FAST AS MEMORY?
China's Memblaze says they've got it in PCIe. Yow
Microsoft brings the CLOUD that GOES ON FOREVER
Sky's the limit with unrestricted space in the cloud
This time it's SO REAL: Overcoming the open-source orgasm myth with TODO
If the web giants need it to work, hey, maybe it'll work
'ANYTHING BUT STABLE' Netflix suffers BIG Europe-wide outage
Friday night LIVE? Nope. The only thing streaming are tears down my face
Google roolz! Nest buys Revolv, KILLS new sales of home hub
Take my temperature, I'm feeling a little bit dizzy
prev story

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
Getting started with customer-focused identity management
Learn why identity is a fundamental requirement to digital growth, and how without it there is no way to identify and engage customers in a meaningful way.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
The Heartbleed Bug: how to protect your business with Symantec
What happens when the next Heartbleed (or worse) comes along, and what can you do to weather another chapter in an all-too-familiar string of debilitating attacks?