System News
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Articles for the keywords: LDOMs
14 Apr 2014 Which Type of Virtualization Should I Use? [35826]
Includes Brian Bream interview

Rick writes, "I routinely ask techies which type of virtualization they'd recommend for which type of job. I seldom get an answer as crystal clear as Brian Bream's.

Video Interview: Which Type of Virtualization Should I Use?

Oracle's portfolio of virtualization technologies includes Oracle VM Server for x86, Oracle VM Server for SPARC (previously known as LDOMS), and Oracle Solaris Zones, among others. Brian Bream provides a crystal clear technical overview of their differences and examples of what you would use them to do to. After you listen to the recording, which is about 5 minutes long, you'll understand why Brian was selected Instructor of the Year for both Oracle University and Sun Microsystems University before that..."
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07 Apr 2014 Oracle DB 12c runs best on SPARC [35739]
What makes Solaris and SPARC servers the best infrastructure for Oracle 12c enterprise databases?

Oracle's vision of Engineered Systems is transforming into reality with every new product that Oracle is launching. Oracle Database 12c, which was launched in 2013, is an example on how Oracle software is optimized for Oracle Solaris SPARC. Oracle Database 12c is co-engineered with Solaris engineering team and Oracle's world record SPARC T5 servers have best performance and maximum ROI.

Independent Software Vendors (ISV) who are developing applications using both Oracle DB 12c and Solaris are taking advantage of one core technology, one operating system, one virtualization tool for all the range of SPARC servers. An ISV application can boost its performance, flexibility and security just by using SPARC high numbers of cores and big memory, combined Oracle 12c/Solaris/SPARC multi-tenancy, zones and LDoms light-weight virtualization technologies, SPARC and Solaris build-in encryption, etc.

Let's take a look at how all this is translated into technical features. What makes Solaris and SPARC servers the best infrastructure for Oracle 12c enterprise databases?...
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24 Feb 2014 What's up with LDoms: Part 8 - Physical IO [35075]
By Stefan Hinker

Stefan writes, "Finally finding some time to continue this blog series... And starting the new year with a new chapter for which I hope to write several sections: Physical IO options for LDoms and what you can do with them. In all previous sections, we talked about virtual IO and how to deal with it. The diagram at the right shows the general architecture of such virtual IO configurations. However, there's much more to IO than that.

From an architectural point of view, the primary task of the SPARC hypervisor is partitioning of the system. The hypervisor isn't usually very active - all it does is assign ownership of some parts of the hardware (CPU, memory, IO resources) to a domain, build a virtual machine from these components and finally start OpenBoot in that virtual machine. After that, the hypervisor essentially steps aside. Only if the IO components are virtual components, do we need hypervisor support..."
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01 Oct 2013 SPARC M6-32 Delivers Oracle E-Business and PeopleSoft World Record Benchmarks [33003]
Linear Data Warehouse Scaling in a Virtualized Configuration

This result demonstrates how the combination of Oracle virtualization technologies for SPARC and Oracle's SPARC M6-32 server allow the deployment and concurrent high performance execution of multiple Oracle applications and databases sized for the Enterprise.

In an 8-chip Dynamic Domain (also known as PDom), the SPARC M6-32 server set a World Record E-Business 12.1.3 X-Large world record with 14,660 online users running five simultaneous E-Business modules.

In a second 8-chip Dynamic Domain, the SPARC M6-32 server set a World Record PeopleSoft HCM 9.1 HR Self-Service online supporting 34,000 users while simultaneously running a batch workload in 29.7 minutes. This was done with a database of 600,480 employees. In a separate test running a batch-only workload was run in 21.2 min.

In a third Dynamic Domain with 16-chips on the SPARC M6-32 server, a data warehouse test was run that showed near-linear scaling.
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26 Aug 2013 Cross-CPU migration in LDoms 3.1 [32460]
Migrate a running virtual machine from a SPARC server with one type of CPU chip to another of a different type

Eric Sharakan writes, "Cross-CPU migration is the ability to migrate a running virtual machine (VM) from a SPARC server with one type of CPU chip to another of a different type. Prior to LDoms 3.1, the only way to perform such a migration was to specify a "cpu-arch" property of "generic" when first defining the VM. Doing so allowed VMs to be migrated between systems based on the T2, T2+, T3 and T4 processors. However, specifying this property results in the VM running without taking advantage of all the features of the underlying CPU, negatively impacting performance. The most serious impact was loss of hardware-based crypto acceleration on the T4 processors. This was unfortunately necessary, due to major changes in HW crypto acceleration introduced in T4..."
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