Feeds

Red Hat sprints past ESX on VM running

Oh Qumranet all ye faithful

Build a business case: developing custom apps

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). ®

Boost IT visibility and business value

More from The Register

next story
Sysadmin Day 2014: Quick, there's still time to get the beers in
He walked over the broken glass, killed the thugs... and er... reconnected the cables*
Auntie remains MYSTIFIED by that weekend BBC iPlayer and website outage
Still doing 'forensics' on the caching layer – Beeb digi wonk
SHOCK and AWS: The fall of Amazon's deflationary cloud
Just as Jeff Bezos did to books and CDs, Amazon's rivals are now doing to it
VVOL update: Are any vendors NOT leaping into bed with VMware?
It's not yet been released but everyone thinks it's the dog's danglies
BlackBerry: Toss the server, mate... BES is in the CLOUD now
BlackBerry Enterprise Services takes aim at SMEs - but there's a catch
prev story

Whitepapers

Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
The Essential Guide to IT Transformation
ServiceNow discusses three IT transformations that can help CIO's automate IT services to transform IT and the enterprise.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
How modern custom applications can spur business growth
Learn how to create, deploy and manage custom applications without consuming or expanding the need for scarce, expensive IT resources.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.