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A Preliminary Study of the Impact of Software Engineering on GreenIT A URLIEN B OURDON A DEL N OUREDDINE R OMAIN R OUVOY L IONEL S EINTURIER prenom.nom@inria.fr PROJECT TEAM ADAM Inria Lille Nord Europe Universit Lille 1 LIFL

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A Preliminary Study of the Impact of Software Engineering

  • n GreenIT

PROJECT TEAM ADAM

Inria Lille – Nord Europe Université Lille 1 – LIFL – CNRS

AURÉLIEN BOURDON ADEL NOUREDDINE ROMAIN ROUVOY LIONEL SEINTURIER prenom.nom@inria.fr

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Context

Information Technologies

French ministries. IT & Sustainable Development report

French electricity consumption 13 %

A Preliminary Study of the Impact of Software Engineering on GreenIT

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Context

Information Technologies

French ministries. IT & Sustainable Development report

French electricity consumption 13 %

?

A Preliminary Study of the Impact of Software Engineering on GreenIT

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Context

Information Technologies

French ministries. IT & Sustainable Development report

French electricity consumption 13 %

?

Research Opportunities

A Preliminary Study of the Impact of Software Engineering on GreenIT

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Context

Information Technologies

French ministries. IT & Sustainable Development report

French electricity consumption 13 %

?

Research Opportunities

A Preliminary Study of the Impact of Software Engineering on GreenIT

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Context

Information Technologies

French ministries. IT & Sustainable Development report

French electricity consumption 13 %

?

Research Opportunities

A Preliminary Study of the Impact of Software Engineering on GreenIT

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Energy Monitoring Framework

A Preliminary Study of the Impact of Software Engineering on GreenIT

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Can we monitor the consumption

  • f an application?

Accuracy

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Can we monitor the consumption

  • f an application?

0.5% error margin

Accuracy

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Overhead

What is the monitoring

  • verhead?

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Overhead

What is the monitoring

  • verhead?

0.2W overhead

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Breakdown

How does it differ from a powermeter?

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Breakdown

How does it differ from a powermeter?

Disk CPU

Disk stress

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Summary

  • Accurate process-level estimation
  • Support for CPU, Disk, Ethernet, RAM
  • No hardware investment required
  • Limited overhead
  • Large-scale deployment
  • Microscope «à la carte»
  • On-demand configuration & adaptation
  • Published in ICSE/Greens’12 & ASE’12
  • Transfert in progress
  • Freely available as OSS [1]
  • GreenCodeLab + ADEME

[1] http://adam.lille.inria.fr/pmwiki.php/Topics/Green

A Preliminary Study of the Impact of Software Engineering on GreenIT

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Empirical Case Studies

A Preliminary Study of the Impact of Software Engineering on GreenIT

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Greens 2012

What is the cost

  • f programming

languages?

  • A. Noureddine, A. Bourdon, R. Rouvoy, and L. Seinturier. A Preliminary Study of the Impact of Software

Engineering on GreenIT. In 1st International Workshop on Green and Sustainable Software (GREENS'12/ICSE'12)

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Language Footprint

1 10 100 1000 10000 100000 C C, O2 C, O3 C++ C++, O2 C++, O3 Java Pascal Prolog Ocaml Ocaml opt Python Perl

Tower of Hanoi (recursive, logarithm scale)

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Language Footprint

1 10 100 1000 10000 100000 C C, O2 C, O3 C++ C++, O2 C++, O3 Java Pascal Prolog Ocaml Ocaml opt Python Perl

Tower of Hanoi (recursive, logarithm scale)

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Language Footprint

1 10 100 1000 10000 100000 C C, O2 C, O3 C++ C++, O2 C++, O3 Java Pascal Prolog Ocaml Ocaml opt Python Perl

Tower of Hanoi (recursive, logarithm scale)

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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ASE 2012

Where is spent the energy inside my app?

  • A. Noureddine, A. Bourdon, R. Rouvoy, and L. Seinturier. Runtime Monitoring of Software Energy
  • Hotspots. In 27th International Conference on Automated Software Engineering (ASE'12)

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Case study

  • Complex application: > 88,000 SLOC
  • Apache JMeter to stress Jetty’s examples
  • One minute, 20 threads, loop count of 500
  • 146 monitored classes & 726 methods

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Class-level consumption

io/AbstractBuffer 39% io/ByteArrayBuff er 24% server/Request 4% util/Utf8Appenda ble 4% io/View 3% server/HttpConn ection 2% io/BufferCache 2% Others 22%

A Preliminary Study of the Impact of Software Engineering on GreenIT

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Class-level consumption

io/AbstractBuffer 39% io/ByteArrayBuff er 24% server/Request 4% util/Utf8Appenda ble 4% io/View 3% server/HttpConn ection 2% io/BufferCache 2% Others 22%

7 classes out of 146 ~80% energy

A Preliminary Study of the Impact of Software Engineering on GreenIT

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0% 2% 4% 6% 8% 10% 12% 14% 16% 10000 20000 30000 40000 50000 60000 CPU Energy % Number of Invocations

Top10 consuming methods

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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0% 2% 4% 6% 8% 10% 12% 14% 16% 10000 20000 30000 40000 50000 60000 CPU Energy % Number of Invocations

Top10 > 50% (of 726, 1.3%)

Top10 consuming methods

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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1 2 3 4 5 6

Method consumption

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Related Work

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A Preliminary Study of the Impact of Software Engineering on GreenIT

Measure Energy Granularity OS or Software Non-Intrusive Software meter Power meters ✔ Hardware ✔ ✖ PowerScope ✔ Process OS ✖ pTop ✔ Process OS for network ✔ Energy Checker ✔ Code Software ✖ OS utilities ✖ Process ✔ ✔ Software profilers ✖ Code Depends on profiler ✔ E-Surgeon ✔ Code ✔ ✔

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QUESTIONS

A Preliminary Study of the Impact of Software Engineering on GreenIT

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Life Cycle Assessment (LCA) for a common PC

  • 30
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15 30 45 Manufacturing Distribution Use End of Life Eco-Indicator’99 points Human Health Ecosystem Quality Resources Duan & al. Life cycle assessment study of a Chinese desktop personal computer

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Event Bus API Listeners CPU Graphic Memory File All Console Network Console Sensors Memory CPU Network Formulae Memory CPU Network Publish Subscribe

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Scalability

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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Scalability

Monitoring 1 application  Monitoring 170 applications

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A Preliminary Study of the Impact of Software Engineering on GreenIT

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State of the Art

JouleMeter EnergyChecker PowerTop pTop Development is over Not easy to support platform interoperability No reusable libraries Manual calibration Requires external device

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A Preliminary Study of the Impact of Software Engineering on GreenIT