The results on the relationship of offset 'a' to sharing ratio are shown
in the latest version of
draft-tsou-softwire-port-set-algorithms-analysis beginning with the
notes to Table 3 in Section 3.2.4 and continuing in Section 4. (BTW, the
title of Table 3 is wrong due to a cut-and-paste error.)
Tom
On 20/05/2013 1:37 AM, Qiong wrote:
...
Further along in the first paragraph there is a reference to rule port
parameters. These are no longer mentioned in the MAP document. However,
Section 5.1 of that document has the following:
"a-bits The number of offset bits. The default Offset bits (a) are 6,
this excludes the system ports (0-1023)."
The use of the term "default" suggests that the value of 'a' is
provisionable. I recently generated results showing that, depending on the
intended number of ports per user, it is possible that a lower value of 'a'
would give a higher sharing ratio even though more than 1024 ports are
excluded as a result. This is due to the effects of rounding. Bottom line:
it may be that the value of 'a' should be made explicitly provisionable,
and it may be that my results would be useful in the deployment document. I
can send them along if the authors are interested.
[Qiong] We will update this part according to your latest results. That
will be quite helpful for deployment.
Section 4.2.5
=============
The offset is discussed here, so my remarks on the value of 'a' in the
previous section also apply. Note that this section currently says the
default is 4 rather than 6.
...
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