[tor-relays] Directory Server and bandwidth accounting

[Roger Dingledine]

On Sat, Jun 28, 2014 at 09:51:08AM -0700, Kali Tor wrote:
> So, no way to offer DS while setting AccountingMax?

Correct.

At least in the scenario in this thread, not advertising the dirport
is a good choice by Tor, since it saves all your bandwidth for 'real'
Tor traffic.

The key thing to realize is that normal Tor traffic is bidirectional (that
is, it's symmetric -- it comes in and then goes out again), but traffic
you serve over your DirPort is only unidirectional. So you'll reach your
accountingmax quicker while wasting (not using) half of that bandwidth.

See also
https://trac.torproject.org/projects/tor/ticket/871

--Roger