Re: [tor-relays] Tor Traffic De-prioritization Script

[Roger Dingledine <arma@xxxxxxxxxxxxxx>]

On Wed, Dec 23, 2020 at 05:47:11AM -0800, tontu wrote:
> I recently acquired a server with "unlimited" (not unmetered) bandwidth
> on a non-Hetzner/OVH/Scaleway network, but the pipe is just 100mbit (and
> will be saturated at some points by personal traffic bursts). That being
> said, I expect the 100mbit pipe to be idle 90% of the time, so it
> doesn't seem ideal to just set a low BandwidthRate.
> 
> The documentation [1] for relay bandwidth shaping options points to a
> script to de-prioritize Tor traffic to ensure that personal traffic
> takes precedence.
> 
> However, the script no longer exists within Tor source code. [2] Is this
> script now deprecated? If not, where can I find it? If so, what
> alternative methods might exist to de-prioritize Tor traffic during
> bursts from personal traffic pipes on Linux or BSD systems?

It looks like yes, we removed it:
https://gitlab.torproject.org/tpo/core/tor/-/issues/29434
https://lists.torproject.org/pipermail/tor-relays/2019-February/016995.html

So it definitely counts as deprecated, in the sense that nobody maintained
it for a long time and then somebody deleted it. :)

But that said, I bet it would still work, or at the very least, it would
be a good set of hints for how to write a new one. If you do write an
updated one, please share it here.

You can find a copy in earlier git branches, e.g.:
https://gitweb.torproject.org/tor.git/plain/contrib/operator-tools/linux-tor-prio.sh?h=maint-0.3.5

Hope this helps!
--Roger

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