Mobile // Mobile Applications
Commentary
8/5/2008
12:00 AM
Commentary
Commentary
Commentary
50%
50%

Oracle-BEA's LiquidVM

Have you ever wanted to run a Java application right on the metal, without concern for an OS? If you're developing a dedicated appliance or embedded system, even one with server-style capabilities, this can be very desirable. Oracle-BEA offers a product called LiquidVM (http://www.bea.com/framework.jsp?CNT=index.jsp&FP=/content/solutions/virtualization/), which is based on the BEA JRockit JVM (http://www.bea.com/framework.jsp?CNT=index.htm&FP=/content/products/weblogic/jrockit/), that runs right on a hypervisor (http://en.wikipedia.org/wiki/Hypervisor), without the need for an OS. 

This also implies that the box running LiquidVM (and the lower-lever hypervisor) can run no other applications besides the one running in the JVM. This may actually be desirable for embedded systems and appliances, where simplicity and raw performance are  important qualities.

Take a look at Oracle-BEA's description of LiquidVM:

LiquidVM provides the following features:

  • JRockit JVM as the Java runtime component.
  • Java run-time class libraries.
  • A scaled-down OS kernel that replaces the OS for LiquidVM. It differs from a normal OS in that it is a single-user, single-process environment that is designed to only run a single JVM. No other processes can be started. It implements the following services that the JRockit JVM needs to run Java:
    • Low-level memory management
    • Thread-scheduling
    • Filesystem
    • Networking
    • Interaction with the hypervisor
  • Java-based services, started after the JRockit JVM has started, that run in threads that are separate from your application. The LiquidVM services are:
    • LiquidVM SSH-service
    • LiquidVM heap-resizer
    • LiquidVM syslog publisher
  • Tools that are used to create and control LiquidVM instances. The LiquidVM tools run on a standard OS; they do not run inside LiquidVM. LiquidVM tools include:
    • LiquidVM launcher—used to start and stop LiquidVM instances
    • LiquidVM Configuration Wizard—used to configure the connection between LiquidVM and the VMware VirtualCenter
  • A virtual local disk for each WLS-VE instance. The local disk removes the dependence on NFS and provides faster and more secure file transfers

For a full description, go to http://e-docs.bea.com/wl-ve/docs10-x/config/lvmintro.html.

-EJB 

Comment  | 
Print  | 
More Insights
Building A Mobile Business Mindset
Building A Mobile Business Mindset
Among 688 respondents, 46% have deployed mobile apps, with an additional 24% planning to in the next year. Soon all apps will look like mobile apps and it's past time for those with no plans to get cracking.
Register for InformationWeek Newsletters
White Papers
Current Issue
InformationWeek Tech Digest, Dec. 9, 2014
Apps will make or break the tablet as a work device, but don't shortchange critical factors related to hardware, security, peripherals, and integration.
Video
Slideshows
Twitter Feed
InformationWeek Radio
Sponsored Live Streaming Video
Everything You've Been Told About Mobility Is Wrong
Attend this video symposium with Sean Wisdom, Global Director of Mobility Solutions, and learn about how you can harness powerful new products to mobilize your business potential.