Friday Aug 31, 2012

Best Practices - Dynamic Reconfiguration

Oracle VM Server for SPARC provides dynamic reconfiguration for CPU, RAM, and I/O devices, letting virtual machine resource be changed on the fly without disruption. Solaris cooperates with Oracle VM Server for SPARC to safely allocate and de-allocate dynamically changing resources - as illustrated in this note.[Read More]

Monday Jul 09, 2012

New blog article series "What's up with LDoms"

Highly recommended: a new series of blog articles by Stefan Hinker, titled "What's up with LDoms" (officialy Oracle VM Server for SPARC) at

The article provides an architectural overview of Oracle VM Server for SPARC and even discusses some new and advanced features. I recommend this to anyone wanting to get a good understanding of Logical Domains / Oracle VM Server for SPARC.

Thursday Jun 14, 2012

Mixed Solaris 10 and 11 versions in logical domains on the same server

You can mix Oracle Solaris 10 and Solaris 11 domains on the same server, subject only to the software requirements for the hardware platform. Read further for details.[Read More]

Saturday Jun 09, 2012

Best Practices - Core allocation

Split core CPU allocation to domains can potentially have an impact on performance, but the logical domains manager tends to prevent this situation, and it can be completely and simply avoided by allocating virtual CPUs on core boundaries. [Read More]

Tuesday Jun 05, 2012

What happened to the MAUs on T4?

The T4 servers have crypto acceleration "just built in" so administrators no longer have to assign crypto accelerator units to domains - it "just happens"[Read More]

Thursday May 24, 2012

Cross-CPU Live Migration in Oracle VM Server for SPARC 2.2

Oracle VM Server for SPARC 2.2 can now live migrate running guest domains between T-series servers even if they don't have the same chip type or frequency. [Read More]

Tuesday Nov 22, 2011

Solaris 10 branded zone VM Templates for Solaris 11 on OTN

Early this year I wrote an article showing how to create a branded Solaris 10 zone under Oracle Solaris 11 - now there's an easy fast way with a Solaris 10 branded zone VM Template.[Read More]

Monday Nov 21, 2011

A Patent for Workload Management Based on Service Level Objectives

I've (after a trifling delay) been awarded a patent for an automatic computer workload manager that describes how to dynamically adjust computer resource in order to meet service level objectives. [Read More]

Thursday Nov 03, 2011

Why Solaris 11 is being released *before* 11/11/11

It would have been very elegant to release Solaris 11 on 11/11/11 (after all, how many chances for that kind of symmetry do you get?), but there are reasons it's not happening: see 11 Reasons Why Oracle Solaris 11 11/11 Isn't Being Released on 11/11/11 .

Aw, darn. Still, it would be nice if we could do Solaris 12 on 12/12/12. After that, we run out of months!

Friday Oct 21, 2011

Solaris 11 is coming!

I just mentioned this, but not prominently enough: Solaris 11 is coming, and you're invited to the party! See for information on the launch event. This is a big advance in Solaris with a lot of exciting new features, so attend or tune into the webcast.

More formally:

Join Oracle executives Mark Hurd and John Fowler and key Oracle Solaris Engineers and Execs at the Oracle Solaris 11 launch event in New York, Gotham Hall on Broadway, November 9th and learn how you can build your infrastructure with Oracle Solaris 11 to:

  • Accelerate internal, public, and hybrid cloud applications
  • Optimize application deployment with built-in virtualization
  • Achieve top performance and cost advantages with Oracle Solaris 11–based engineered systems

The launch event will also feature exclusive content for our in-person audience including a session led by the VP of core Solaris development and his leads on Solaris 11 and a customer insights panel during lunch. We will also have a technology showcase featuring our latest systems and Solaris technologies. The Solaris executive team will also be there throughout the day to answer questions and give insights into future developments in Solaris.

Don't miss the Oracle Solaris 11 launch in New York on November 9. REGISTER TODAY!

Wednesday Oct 19, 2011

Engineered and General Purpose Systems

In this entry I discuss why engineered systems in the Oracle Exadata and Exalogic family are a dramatic change in how systems will be designed and delivered. Performance, management, and reduction of complexity and risk are key factors that will make engineered systems increasingly important.[Read More]

Sunday Oct 02, 2011

T4 arrives!

The SPARC T4 adds world-class single CPU thread performance to the throughput computing performance T-series systems are known for. It has 2.85 or 3.0Ghz clock rate, branch prediction, longer pipelines, Out-Of-Order execution, for up to 5x better per-CPU performance than its predecessors.[Read More]

Wednesday Jul 13, 2011

In the zone - new demo/example of zones on OTN

OTN is hosting a new flash demo with a customer story and explanation showing how zones can reduce costs and improve delivery of new services with quicker time to market. Also: a new world record benchmark.[Read More]

Thursday Jul 07, 2011

Secure administration of Oracle VM Server for SPARC (Logical Domains)

Oracle VM Server for SPARC (Logical Domains) includes provides a variety of features that enhance security. This article describes its security advantages, and illustrates how to use Solaris Role Based Access Control (RBAC) to permit management without requiring the use of the root userid.[Read More]

Wednesday Jun 15, 2011

DTrace with Oracle VM Server SPARC 2.1

Live migration is the most notable of the new features of OVMSS 2.1, there are several other enhancements. Another one is the addition of DTrace support for instrumenting OVMSS behavior.[Read More]



« March 2015