[tor-relays] My Relay speed has dropped nearly to zero - Why?

Sun Oct 20 01:24:29 UTC 2013

I saw something that could explain what's going on, from what I've seen on a Tor relay on my home connection.

If the amount of available bandwith is not very huge (~80kB/s for example), when the relay become an Exit Node, the difference of used bandwith is very huge. For me, the used bandwith of the Non-Exit relay was, during several days, approaching 0 (but was really better few days ago), but as soon as it became an Exit Relay, every available kilobyte/s were used, sometimes during the entire day.

When I did the same with a very fast node (~10MB/s) I didn't seen any difference of bandwith usage : the machine is still working at (the same) full capacity.

Maybe it could be explained by the fact that there is "far" (I guess but I don't know) far enough bandwith for entry and midle nodes (they are not the congestionned part of the Tor network), but it's not the same for Exit Nodes. So Tor users probably rarely connect to a low bandwith relay when several high capacity relays can take more clients. (this guess is what leads me to set my "ElectronLibre" home relay as Exit Node and 2 other fast servers also).

----- Mail original -----
De: "Jesse Victors" <jvictors at jessevictors.com>
À: tor-relays at lists.torproject.org
Envoyé: Dimanche 20 Octobre 2013 01:13:55
Objet: Re: [tor-relays] My Relay speed has dropped nearly to zero - Why?

On 10/19/2013 06:00 AM, tor-relays-request at lists.torproject.org wrote:
> Message: 3
> Date: Sat, 19 Oct 2013 00:55:42 -0400
> From: Torop <torop at optonline.net>
> To: tor-relays at lists.torproject.org
> Subject: Re: [tor-relays] My Relay speed has dropped nearly to zero -
> 	Why?
> Message-ID: <526210CE.80409 at optonline.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> On 10/18/2013 11:46 PM, David Carlson wrote:
>> > On October 8 something caused my non-exit relay speed to drop from
>> > around 50 KB to less than 10 KB according to Atlas graphs.  I have
>> > checked with my ISP and run speed tests that verify my upload speed to
>> > be .96 Mb and download to be over 3 Mb, as they have been for years.  I
>> > am running Tor 0.2.4.17-rc on Windows 7 and my consensus weight has
>> > dropped to 26.  What could have caused this?
>> >
> Same here. See the below and do the math on how much data I was and am 
> now pushing per 24 hours, as well as open circuits.
>
>
> Oct 07 09:04:41.242 uptime 15 days 22:00 hours, 791 circuits open.
> I've sent 55.41 GB and received 57.06 GB.
> Oct 08 09:04:41.237 uptime 16 days 22:00 hours, 1255 circuits open. I've 
> sent 63.95 GB and received 65.80 GB.
>
> Oct 17 23:04:41.236 uptime 26 days 12:00 hours, 87 circuits open.
> I've sent 90.08 GB and received 92.16 GB.
> Oct 18 23:04:41.259 uptime 27 days 12:00 hours, 87 circuits open.
> I've sent 91.85 GB and received 93.96 GB.
I've been seeing the same. My bandwidth limit is around 3 MB/sec, but
it's been consistently at 400-600 KB/sec. I don't think it started that
early for me though, not sure though. I was going to blame it on psad,
but I can't see any evidence of that. The fact that all three of us
experience this is interesting.

Jesse V.

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