Behavior of Slowly-Responsive Congestion Control Algorithms
- Although some TCP-compatible
congestion algorithms appear to be using the same amount of bandwidth,
when put in to a highly dynamic environment such as the internet they have
been found to not compete equitably especially over time. What aspects of these algorithms are
responsible for their remaining TCP-compatible under dynamic conditions?
- A comparative analysis of
several distinct techniques to remain TCP-Compatible over long periods of
time in a highly dynamic environment.
An overview of all of the possible solutions, where they fit into
the spectrum, and there actual effectiveness in a tested dynamic scenario.
- A. The different TCP-Compatible congestions
AIMD (Multiplicative increase/decrease)
- TCP-Compatibleness in a
static environment does not directly translate to the dynamic environment
over long periods of time.
- The TCP-Compatible paradigm
simply transforms the requirement that all congestion control mechanisms
are TCP into all being TCP-compatible.
This paradigm is required because of TCP’s widespread acceptance.
- SlowCC algorithms do not meet
TCP fairness because they are too slow to respond to network conditions,
and do not take enough available bandwidth.
- Critique the main
System researchers and
builders should recognize how important implementation is before making
something a standard. Had some of
these congestion control mechanisms been released on the grounds that they
were TCP-compatible in a static environment, they would have been found to
be lacking in the dynamic environment.
They have been deemed safe for deployment, but suffer from a lower
level of throughput than normal TCP.
The question that needs to be answered is: Can we sacrifice throughput in order to
have more stable flows? In the case
of streaming media the answer may be yes.
- Significance- 2
The article is more of an evaluation of the current implementations than
an actual discovery. There
evidence is somewhat conclusive, but should be considered more of a
review than a discovery.
- Convincing- 3 Each
of the implementations are well explained and they do present some actual
network data. It is a difficult
task to create a large dynamic environment, but this is necessary for
testing how it will perform on the internet.