The RTPL (Remote Throughput, Ping and Load) is a package intended to do periodically net performance measurements tests to obtain the network performance from an end user viewpoint. The performance measurements are consisting of roundtrip and throughput measurements between a number of hosts. These measurements are executed by commonly used Internet tools.
Optionally also UDP tests can be executed using the UDPmon toolkit. In these tests a few thousand UDP packets are send that are marked with timestamps and sequence numbers. At the receiving host a.o. UDP bandwidth and the number packets lost can be retrieved from this information. However, the precise timing library, required to be able to calculate these data, is only available at Pentium processors. Due to the limited number packets involved these UDP tests are non-intrusive.
Because we are interested in the network performance from a user viewpoint and not in the maximum possible capacity of a network, the measurement parameters are configured to default values and the test test durations are limited: various long term statistics will blur the short time fluctuations.
The RTPL package is described in the following documents which are available for on-line viewing and for downloading:
In this section some links are specified to versions of the package which are currently used.
|Hans Blom, Mark Jansen.|