[tor-bugs] #33076 [Metrics/Analysis]: Graph onionperf and consensus information from Rob's experiments
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Wed Jan 29 20:15:02 UTC 2020
#33076: Graph onionperf and consensus information from Rob's experiments
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Reporter: mikeperry | Owner: metrics-team
Type: task | Status: needs_revision
Priority: Medium | Milestone:
Component: Metrics/Analysis | Version:
Severity: Normal | Resolution:
Keywords: metrics-team-roadmap-2020Q1 | Actual Points:
Parent ID: | Points:
Reviewer: | Sponsor:
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Comment (by karsten):
I attached a new set of graphs
[https://trac.torproject.org/projects/tor/attachment/ticket/33076/cdf-
relay-utilization-and-stream-capacity-2020-01-29b.pdf here]. They are all
cut off at percentile 95, and they all contain the plotted formula in the
subtitle.
Regarding the `max(rate, burst, observed)` part, I'm worried that this
number is not very meaningful. In theory, the operator can pick any
numbers for rate and burst which the relay can never provide. I plotted
one graph with that number, but I don't think we should use that.
The `min(rate, burst, observed)` number is what we typically use as
''advertised'' bandwidth. Maybe it's sufficient to ignore what the
operator thought the relay could/should provide and look at observed
bandwidth only. I included a plot for this, too.
I recall the peak advertised bandwidth thing we talked about in Whistler.
It's significantly harder to compute than the current advertised (or
observed) bandwidth, because we need to include lots of descriptors for
that. We should pick a formula that we use for all experiments, not just
for this one. Maybe we can start with the single value and leave it as a
possible extension for the future to consider a moving window of 30 days.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33076#comment:10>
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