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Data Center Energy Efficiency: Analysis and Test of Energy Consumption Benchmark Tools. Erick Butler Poletto (Matricola: 720403) Ricardo Alexandre Fiorelli (Matricola: 719874) Prof.ssa Chiara Francalanci. July 21 th , 2009. Outline. Introduction Research Objectives Methodology - PowerPoint PPT Presentation
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Erick Butler Poletto (Matricola: 720403)Ricardo Alexandre Fiorelli (Matricola: 719874)
Prof.ssa Chiara Francalanci
July 21th, 2009
Introduction Research Objectives Methodology Analysis and Conclusions Further Work
What is Green Computing? Green ICT Phases
◦ Assessment and Action Plan Green ICT Benefits:
◦ Reduction of costs ◦ Reduction of power consumption◦ Reduction of data center used area◦ Marketing strategy
Reduce the burden of ICT on the environment
Green of ICT Green by ICTReduce the burden
on the environment by
improving efficiency through
the use of ICT•Data Center Centralization•Hosting
•Communication•Remote Data Access
Machine Configuration Policies / Tools / Labels Thin Client Architectures Virtualization in servers Data Storage Power Architectures Cooling
Introduction Research Objectives Methodology Analysis and Conclusions Further Work
Objectives Benefits
Creation of a Database of components
Evaluate power consumption data of a benchmarking tool (SANDRA)
Identification of critical power consumption spots in a datacenter
Easy choice of power-efficient machine configurations
Introduction Research Objectives Methodology Analysis and Conclusions Further Work
For Database of Components:◦ SiSoftware Sandra◦ WebSPHINX (web crawler)
For Data Validation:◦ Energy Measurement Device
Benchmark for several typologies of components
Database of components that permits comparisons between them
Provides information about components power, performance and price
Main source of gathered data Sandra database – no centralized
component repository Each benchmark has its own list of
components Solution:
◦ Introduction of the MPN code
Set of categories and relations:◦ Classification Relations◦ Characteristic Relations◦ Benchmark Relations◦ Price Relation
Provides a way to compare and evaluate the data center components
Validate the measures from Sandra
Introduction Research Objectives Methodology Analysis and Conclusions Further Work
Comparison between: ◦ Sandra estimated processor power ◦ Nominal processor power (specification)
Sandra measured power > nominal power for 30% of the components
Idle and stressed processor
Why Sandra is not reliable?◦ Sandra power estimates can be are higher than
nominal power◦ Its measures differ by a large margin from the
ones made with the measuring tool
Possible reasons for observed Sandra innacuracies:◦ Not centralized component database
Sandra may associate the benchmarked component to a different one in its database
◦ Power information can be erroneous◦ Power information is not associated with the
machine workload Does it refer to idle or stressed component?
Measurement error sources:◦ Power hypotheses:
Hard Drives and Wireless << Processor, Memory or PSU
◦ Oscillations in measurement◦ Use of PSU and monitor power estimates
Although the measurements were not completely accurate themselves, Sandra was regarded as non reliable◦ Sum of hard disk and wireless card powers usually
is around 2,5W◦ For a certain operation level, the measured power
did not oscillate much◦ In some cases, Sandra provided a processor power
estimate incoherent with their nominal power◦ The error commited in the estimates of the PSU
and monitor power do not explain the observed deviations
The database of components is a very effective tool
With relation to power consumption, Sandra is not the best source of data
Other sources of power-related data should be considered
Introduction Research Objectives Methodology Analysis and Conclusions Further Work
Automated update of the database. A back-end robot would crawl the web for new components and their specifications/prices
Use of a new source of power-related data
a GUI front-end software for an interactive and effective way of comparing the components
Erick Butler PolettoRicardo Alexandre Fiorelli