Inlämning av Examensarbete / Submission of Thesis

Fredrik Stridh MSE-2009-35, pp. 36. COM/School of Computing, 2009.

The work

Författare / Author: Fredrik Stridh
Titel / Title: A Simple Throttling Concept for Multithreaded Application Servers
Abstrakt Abstract:

Multithreading is today a very common technology
to achieve concurrency within software. Today there
exists three commonly used threading strategies for
multithreaded application servers. These are thread per
client, thread per request and thread pool. Earlier
studies has shown that the choice of threading strategy
is not that important. Our measurements show that the
choice of threading architecture becomes more
important when the application comes under high load.
We will in this study present a throttling concept which
can give thread per client almost as good qualities as
the thread pool strategy when it comes to performance.
No architecture change is required. This concept has
been evaluated on three types of hardware, ranging
from 1 to 64 CPUs, using 6 alternatives loads and both
in C and Java. We have also identified that there is a
high correlation between average response times and
the length of the run time queue. This can be used to
construct a self tuning throttling algorithm that makes
the introduction of the throttle concept even simpler,
since it does require any configuring.

Ämnesord / Subject: Datavetenskap - Computer Science\Software Engineering

Nyckelord / Keywords: throttling, multithreaded, server

Publication info

Dokument id / Document id:
Program:/ Programme Civilingenjör i programvaruteknik/Civil engineer in Software Engineering
Registreringsdatum / Date of registration: 01/15/2010
Uppsatstyp / Type of thesis: Magisterarbete/Master's Thesis (60 credits)


Handledare / Supervisor: Daniel Häggander
Examinator / Examiner: Robert Feldt
Organisation / Organisation: Blekinge Institute of Technology
Institution / School: COM/School of Computing

+46 455 38 50 00

Files & Access

Bifogad uppsats fil(er) / Files attached: masterthesisfredrikstridh_final.pdf (247 kB, öppnas i nytt fönster)