[tor-relays] sustained bandwidth drop through noisetor

[Roger Dingledine]

On Wed, May 02, 2012 at 08:29:08PM -0700, Andy Isaacson wrote:
> Has there been a change in the routing algorithm, or any other network
> changes that might explain this drop?

I opened https://trac.torproject.org/projects/tor/ticket/5755 for a
related topic that I think will help answer questions like this (or at
least narrow out possible explanations).

So long as https://metrics.torproject.org/performance.html#torperf is
looking steadily good, I'm not too worried about individual fluctuations
in relays -- there is currently at least slightly more capacity in the
network than is needed to keep the torperf results at that level.

Another resource you might find interesting is
http://freehaven.net/~arma/moria1-v3-status-votes
which lets you look up the individual weighting votes for your relay
from the most recent consensus.

In theory, if your capacity has stayed the same but your load has
dropped, then the bandwidth authority measurements should show you as
getting faster. I wonder what happened in practice. Last I checked, Mike
didn't want to publish any intermediate statistics from the bandwidth
authorities, because they were too voodooey.

--Roger