Group 25

Sumin Mohanan, Zoheb .H Borbora3/8/2011

TPC (Transaction Processing Performance Council)◦ Founded in 1988 to define transaction processing and database benchmarks

Obsolete standards◦ TPC-A : update – intensive database environments ◦ TPC-App : Application server and web services benchmark ◦ TPC – B : Measured throughput as transactions / second◦ TPC- D : Decision support applications (long running queries) ◦ TPC – R : Business reporting / Decision support benchmark◦ TPC – W : Transactional web e-commerce bench mark

Current standards◦ TPC- C : OLTP benchmark◦ TPC- E : OLTP benchmark that simulates the workload of a brokerage firm◦ TPC – H : Ad hoc decision support benchmark

Add-ons◦ TPC- PR : A single pricing specification to be consistent across benchmarks◦ TPC- Energy : Augments TPC Benchmarks with Energy Metrics

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As of 2006, electricity used by servers and data centers in USA is equal to the amount of electricity used by the entire U.S transportation manufacturing industry (US Census Bureau 2006, US DOE 2005)

In 2006, More than one-third of the electricity use in USA IT space attributable to enterprise-class data centers.

http://www.energystar.gov/ia/partners/prod_development/downloads/EPA_Datacenter_Report_Congress_Final1.pdf

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Ref :Energy Cost , The Key Challenge of Today's Data Centers : A power consumption analysis of TPC-C Results , ACM 2008

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Much of this poor efficiency is caused by a historical lack of attention to power efficiency not by inherent limitations imposed by physics

Ref : L. A. Barroso, U. Hölzle, The Datacenter as a Computer:An Introduction to the Design of Warehouse-Scale Machines, 2009

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TPC, SPEC, SPC◦ Prominent industry consortia for performance

measurements 2007 - TPC formed a committee to add energy

metrics to all its benchmarks Wherein TPC performance metrics correspond to

the amount of work completed per unit of time, TPC - Energy metric measures the energy consumption corresponding to the amount of work

Metric plainly represented as Watts/Performance

Ref: http://www.tpc.org/tpc_energy/Presentations/EnergyBenchmarks.pdf

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Comprehensive metric that takes into account◦ all the components including database server, middle

tier, storage subsystem and connectivity devices◦ Work load characteristics (time based vs task based)

Overall power◦ Pi = Power consumption in interval i

◦ Ti = Performance measurement (tpmC, tpsC) in interval i

◦ Si = weight corresponding to duration of the interval i

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Performance comparison for the TPC-E benchmark with and without energy metric

Best Watts/tpsE results – 0.93◦ Fujitsu Primergy RX300* – results submitted 2/14/11◦ Great improvement over the HP Proliant system

(Watts/tpsE = 5.84)

TPC- Energy

included

No. of results

Min (tpsE)

Max (tpsE)

Mean (tpsE)

No 10 1,493.42 3,800.00 2270.17

Yes 3 1,268.30* 2,001.12 1556.52

Ref: http://www.tpc.org/tpce/default.asp

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Data center best practices ◦ Measure Power Usage Effectiveness (PUE)◦ Manage air flow◦ Adjust the thermostat.◦ Use free cooling.◦ Optimize power distribution.◦ Buy efficient servers.

Warehouse-scale computer◦ Holistic approach to the design and development of

various components of the modern data center

Ref: http://www.google.com/corporate/datacenter/best-practices.html

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http://www.tpc.org/information/press/tpcpress20100707.asp Energy Cost , The Key Challenge of Today's Data Centers : A power consu

mption analysis of TPC-C Results , Poess et al., ACM 2008 www.energystar.gov/ia/partners/prod_development/downloads/EPA_Datace

nter_Report_Congress_Final1.pdf http://www.tpc.org/tpc_energy/Presentations/EnergyBenchmarks.pdf http://en.wikipedia.org/wiki/Transaction_Processing_Performance_Council http://www.tpc.org/tpce/default.asp http://www.google.com/corporate/datacenter/best-practices.html L. A. Barroso, U. Hölzle, The Datacenter as a Computer:An Introduction to

the Design of Warehouse-Scale Machines, 2009

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