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Multi-Processor Server Virtualization, Accelerated by IBM, Intel

Armonk, New York - A programme intended to improve how IT managers select, deploy and measure virtualized server solutions for enterprise data centers, has been employed by IBM and Intel Corporation.

VMware Infrastructure, a virtualization technology on Intel-based servers is becoming widely used in production environments and is increasing capturing mid-tier application workloads.

''As mid-sized and large enterprise IT organizations strive to cash in on the cost savings of data center consolidation through server virtualization, hosting applications on larger, more expandable multi-processor servers delivers the best return on investment. Nevertheless, many organizations need the tools to help them select the server platform that works best in their unique environments,'', explained Jim Northington, Vice President, System x, IBM.

One of the first instruments to appear from this joint initiative is a new virtualization benchmarking methodology called vConsolidate that runs multiple instances of consolidated database, mail, web and JAVA(1) workloads in multiple virtual CPU partitions on Intel-based System x servers to simulate real-world server performance in a typical environment. IBM and Intel are contributing the vConsolidate methodology to an industry standards body for consideration.

Boyd Davis, General Manager of Intel Server Platform Group Marketing added, ''Intel took a major step toward accelerating virtualization with the introduction of our first processors with integrated Intel Virtualization Technology more than a year ago, and we have built a broad software ecosystem to support it. By creating the vConsolidate methodology with IBM, we are helping to make it easier for IT managers to adopt the technology and compare processor platforms and system configurations.''

Using vConsolidate to benchmark the IBM System x3950 server with four dual-core Intel Xeon 7100 processors shows the x3950 delivers up to 46 percent more performance throughput than a competing system when running a mix of larger two- and four virtualized processor partitions(2).

IBM and Intel, based on the customer test results, created a VMware Infrastructure Sizing Guide aimed at helping customers select and appropriately configure the different virtualized server options available to them. This tool draws from IBM's vast virtualization experience, dating back to its revolutionary work on mainframe virtualization 40 years ago, and the lessons learned from helping customers consolidate their server environments. The result is a tool that provides suggestions for target utilization rates, the total number of virtual machines that will be needed to run the application, and the number of physical servers required to support the computing workload and goals. The tool identifies an economy of scale associated with larger server configurations based on:

  • Ability to support more applications when usage peaks
  • Conservation of reserve memory across all virtual machines on a server
  • More processor targets for scheduling job execution

Both the sizing guide effort and the vConsolidate testing results identified memory as a key limiting factor in finding out how many virtual machines can be loaded onto an Intel-based server. IBM and Intel researchers have studied the impact of increased addressable memory on virtualization performance. By collecting data from more than 10,000 servers through IBM’s Consolidation Discovery and Analysis Tool, the researchers determined that while virtualization grows total processor utilization, additional reserve memory is required to allow for application usage spikes.

This insight prompted further joint development using the IBM System x3950 as a large memory system reference configuration to increase the total addressable memory pool from 64GB to 128GB. Intel and IBM expect this expanded memory addressability to be supported in the leading virtualization platforms beginning next year.

The success with our System x servers and the Intel Xeon 7100 processor series architecture gives us the confidence to invest in a fourth generation of our Enterprise X-Architecture supporting quad-core Intel Xeon processors for multi-processor servers in the middle of 2007, said Northington.

To learn more about IBM virtualization, please visit:

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