[anti-censorship-alerts] [FIRING:1] Snowflake probetest failures

[meskio]

Quoting Roger Dingledine (2022-04-06 10:33:39)
> On Wed, Apr 06, 2022 at 08:23:41AM +0000, meskio wrote:
> > Quoting meskio (2022-04-05 20:11:37)
> > > It looks like the 'unkown' NAT proxies are going up pretty fast while other NATs 
> > > go down. I got into the server, but I don't see it being overloaded or any 
> > > obvious problem. I restarted probetest, let's see if it gets back to normal.
> > 
> > The restart seems to have solved the problem :)
> 
> Ok great, but, that means the "nat prober can't keep up" issue isn't a
> scalability bottleneck, it is a bug in the nat prober -- where sometimes
> it decides to stop probing, for reasons we don't understand?
> 
> If so, then better load balancing
> (https://gitlab.torproject.org/tpo/anti-censorship/team/-/issues/75)
> won't necessarily solve the issue.

Exactly, I'm not sure load balancing will solve the problem. We do have an issue 
for this specific problem, but haven't found what is causing it:
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40071


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