a preliminary study of the impact of software engineering...

A Preliminary Study of the Impact of Software Engineering on GreenIT

PROJECT TEAM

ADAM Inria Lille – Nord Europe

Université Lille 1 – LIFL – CNRS

AURÉLIEN BOURDON ADEL NOUREDDINE ROMAIN ROUVOY LIONEL SEINTURIER

[email protected]

Co

nte

xt

Information Technologies

French ministries. IT & Sustainable Development report

French electricity consumption

13%

A Preliminary Study of the Impact of Software Engineering on GreenIT 2

Co

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xt




13%

?


Co

nte

xt




13%

?

Research Opportunities


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xt




13%

?



Energy Monitoring Framework


Can we monitor the

consumption

of an application?

Ac

cu

racy

8 A Preliminary Study of the Impact of Software Engineering on GreenIT

Can we monitor the

consumption

of an application?

0.5% error margin

Ac

cu

racy


Overh

ead

What is the

monitoring

overhead?


Overh

ead

What is the

monitoring

overhead?

0.2W overhead


Bre

akd

ow

n

How does it differ

from a powermeter?


Bre

akd

ow

n

How does it differ

from a powermeter?

Disk

CPU

Disk stress


Su

mm

ary

• 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

Empirical Case Studies


Gre

en

s 2

012

What is the cost

of 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)


Lan

gu

ag

e F

oo

tpri

nt

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)


Lan

gu

ag

e F

oo

tpri

nt

1 10 100 1000 10000 100000

C

C, O2

C, O3

C++

C++, O2

C++, O3

Java

Pascal

Prolog

Ocaml

Ocaml opt

Python

Perl



AS

E 2

012

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)


Ca

se

stu

dy

• 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


Cla

ss

-level co

nsu

mp

tio

n

io/AbstractBuffer 39%

io/ByteArrayBuffer

24% server/Request

4%

util/Utf8Appendable 4%

io/View 3%

server/HttpConnection

2%

io/BufferCache 2%

Others 22%


Cla

ss

-level co

nsu

mp

tio

n

io/AbstractBuffer 39%

io/ByteArrayBuffer

24% server/Request

4%

util/Utf8Appendable 4%

io/View 3%

server/HttpConnection

2%

io/BufferCache 2%

Others 22%

7 classes out of 146

~80% energy


0%

2%

4%

6%

8%

10%

12%

14%

16%

0

10000

20000

30000

40000

50000

60000

CPU Energy % Number of InvocationsT

op

10 c

on

su

min

g m

eth

od

s


0%

2%

4%

6%

8%

10%

12%

14%

16%

0

10000

20000

30000

40000

50000

60000

CPU Energy % Number of Invocations

Top10 > 50% (of 726, 1.3%)

To

p10 c

on

su

min

g m

eth

od

s


0

1

2

3

4

5

6M

eth

od

co

nsu

mp

tio

n


Rela

ted

Wo

rk


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 ✔ ✔

QUESTIONS


Life Cycle Assessment (LCA) for a common PC

-30

-15

0

15

30

45

Manufacturing Distribution Use End of Life

Ec

o-I

nd

ica

tor’

99

po

ints

Human Health Ecosystem Quality Resources

Duan & al. Life cycle assessment study of a Chinese desktop personal computer


Event Bus API

Listeners

CPU Graphic

Memory File

All Console

Network Console

Sensors

Memory

CPU

Network Formulae

Memory

CPU

Network

Publish

Subscribe


Scala

bilit

y


Scala

bilit

y

Monitoring 1 application Monitoring 170 applications


Sta

te o

f th

e A

rt

JouleMeter

EnergyChecker

PowerTop

pTop Development is over

Not easy to support platform

interoperability

No reusable libraries

Manual calibration

Requires external device


a preliminary study of the impact of software engineering...

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