Abstract
Many global distributed cloud computing
applications and services running over the Internet, between
globally dispersed clients and servers, will require certain
levels of Quality of Service (QoS) in order to deliver and give a
sufficiently smooth user experience. This would be essential for
real-time streaming multimedia applications like online
gaming and watching movies on a pay as you use basis hosted
in a cloud computing environment. However, guaranteeing or
even predicting QoS in global and diverse networks supporting
complex hosting of application services is a very challenging
issue that needs a stepwise refinement approach to be solved as
the technology of cloud computing matures. In this paper, we
investigate if latency in terms of simple Ping measurements can
be used as an indicator for other QoS parameters such as jitter
and throughput. The experiments were carried out on a global
scale, between servers placed in universities in Denmark,
Poland, Brazil and Malaysia. The results show some
correlation between latency and throughput, and between
latency and jitter, even though the results are not completely
consistent. As a side result, we were able to monitor the
changes in QoS parameters during a number of 24-hour
periods. This is also a first step towards defining QoS
parameters to be included in Service Level Agreements for
cloud computing in the foreseeable future.
Keywords: Cloud computing, IT Infrastructure,
applications and services running over the Internet, between
globally dispersed clients and servers, will require certain
levels of Quality of Service (QoS) in order to deliver and give a
sufficiently smooth user experience. This would be essential for
real-time streaming multimedia applications like online
gaming and watching movies on a pay as you use basis hosted
in a cloud computing environment. However, guaranteeing or
even predicting QoS in global and diverse networks supporting
complex hosting of application services is a very challenging
issue that needs a stepwise refinement approach to be solved as
the technology of cloud computing matures. In this paper, we
investigate if latency in terms of simple Ping measurements can
be used as an indicator for other QoS parameters such as jitter
and throughput. The experiments were carried out on a global
scale, between servers placed in universities in Denmark,
Poland, Brazil and Malaysia. The results show some
correlation between latency and throughput, and between
latency and jitter, even though the results are not completely
consistent. As a side result, we were able to monitor the
changes in QoS parameters during a number of 24-hour
periods. This is also a first step towards defining QoS
parameters to be included in Service Level Agreements for
cloud computing in the foreseeable future.
Keywords: Cloud computing, IT Infrastructure,
| Originalsprog | Engelsk |
|---|---|
| Titel | 2011 Ninth IEEE International Conference on Dependable, Autonomic and Secure Computing |
| Antal sider | 8 |
| Forlag | IEEE Computer Society Press |
| Publikationsdato | 2011 |
| Sider | 682-689 |
| ISBN (Elektronisk) | 978-0-7695-4612-4 |
| DOI | |
| Status | Udgivet - 2011 |