Hi,
I'm reading the new draft of SF0 and noticed the authors have resolved comments
on a phrase of "effectively used cells" in it!
https://tools.ietf.org/html/draft-ietf-6tisch-6top-sf0-03
However, there is still one "effectively used cells" remaining in section 2:
draft> ... In order to reduce consumption, this algorithm is triggered only when
draft> there is a change on the number of effectively used cells or if there is
draft> a change on the number of requested cells from a particular node.
Should this "effectively used cells" be replaced with "required cells" or should
"the number of effectively used cells" be replaced with "the current number of
required cells" according to section 4...?
Thank you!
Yatch
On 2017/03/05 22:13, Yasuyuki Tanaka wrote:
Nice comments!
I also want to see the definition of "effectively used cell" and
how to calculate PDR.
In addition, I don't think that we would count the number of
cells used for 6P in terms of SF0. Is it correct? In any case,
some text on how SF0 should handle traffic or cell usage by 6P
would be helpful.
Best,
Yatch
On 2017/03/05 11:20, Randy Turner wrote:
Hi All,
After reading the current SF0 document, I had a few nits that I thought I would
pass along - hope they’re helpful.
Section 2: Introduction
(The Scheduling Algorithm)
“…under effective use…” the choice of wording seems unorthodox.
Suggest the following “A portion of these allocated cells will be effectively
utilized by neighbors, while the remaining cells can be over-provisioned to
handle unanticipated increases in cell requirements”
(The Relocation Algorithm)
“Allocated cells may experiment packet loss” should be “Allocated cells may
experience packet loss…”
Section 4: SF0 Triggering Events
1. “…change in the current number of used cells” - could this be paraphrased
to say “…a change in the number of required cells” ?
Section 5: SF0 Estimation Algorithm
The Cell Estimation Algorithm steps, # 2 - What is an “effectively” used cell?
Could this just say “Collect the current number of used cells” ?
There is actually quite a bit of emphasis in this document on the idea of an
“effectively used cell” - perhaps we should explain the concept of an
effectively used cell (or a reference if it’s already defined) - I was curious
why the term “effective” is used so often? In the “Cell Estimation Algorithm”
Step #2, the text reads:
“Collect the current number of effectively used cells” — which would seem to
imply that ineffectively used cells wouldn’t be included in this step. This
may seem a too literal interpretation, I’m just looking for clarity as to
whether or not the term “effective” or “effectively” is really needed in the
doc.
Section 11: Relocating Cells
Just for completeness, I would emphasize how PDR is calculated, or include a
reference to some other document if defined elsewhere
Thanks for this work!
Randy
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