Additional Resources - Compaq BL10e - HP ProLiant - 512 MB RAM Update Manual

ISS Technology Update
20%
10%
Active idle
Overall operations per watt
Calculating and interpreting SPECpower_ssj2008 results
The SPECpower_ssj2008 benchmark generates a final metric that is the overall operations-per-watt. This number is calculated
by adding together the number of Java operations performed at each target load and dividing this number by the sum of the
power consumptions at each target load. Thus, the overall operations-per-watt is an equally weighted average of the
performance to power ratio taken across the entire operating range of the server.
Overall operations-per-watt is useful for a general comparison of performance and power between servers; however, it may be
too broad a metric when considering specific application scenarios or utilization levels. If it is known that a server will be used
in a heavily loaded environment, it is more important to compare the performance-to-power ratios of the server at higher
utilizations and not focus as much on the overall performance–per-watt value.
SPEC Power futures
The SPECpower_ssj2008 is a relatively new, but increasingly important benchmark, and it continues to evolve. Version 1.10 of
the benchmark, announced in April 2009, has added support for server blade configurations. SPEC has also published
SPECweb2009, which is a power-oriented version of the SPECweb benchmark. Further developments in this area will be
happening relatively quickly since power efficiency in the data center remains an important topic.
To contact an HP spec representative, click here: spec@hp.com.

Additional resources

For additional information on the topics discussed in this article, visit the following websites:
Source
SPEC.org
SPECpower_ssj2008 main page
HP ProLiant Servers
Benchmarks page
20.1% 108,342
10.0% 54,143
Email / Hyperlink
http://www.spec.org/power_ssj2008/
http://h18004.www1.hp.com/products/servers/benchmark
s/index.html
153
134
0 124
Volume 8, Number 6
710
403
0
1,394
3