[tor-relays] Why can't I see more traffic? (is my banana too weak?)

Logforme m7527 at abc.se
Sat Sep 3 15:37:54 UTC 2016


Looking at Atlas your relay advertises 2.45 MB/s which is quite low for 
a 100Mbit connection: 2.45 MByte x 8 = 19.6 MbitWhat value do you have 
in your torrc? For a 100mbit connection it should be at least: 
BandwidthRate 12 MB


------ Originalmeddelande ------
Från: "Roman Mamedov" <rm at romanrm.net>
Till: "Aeris" <aeris+tor at imirhil.fr>
Kopia: tor-relays at lists.torproject.org; "Farid Joubbi" <joubbi at kth.se>
Skickat: 2016-09-03 17:14:08
Ämne: Re: [tor-relays] Why can't I see more traffic? (is my banana too 
weak?)

>On Sat, 03 Sep 2016 16:53:25 +0200
>Aeris <aeris+tor at imirhil.fr> wrote:
>
>>  > Could it be that it is due to the quite slow hardware, even though 
>>I know
>>  > that it is able to push more traffic?
>>
>>  Yep, surely.
>>
>>  You currently push 3Mbps of traffic, which is correct for this kind 
>>of hardware.
>>  All "cheap" hardware (raspi, banana, olimex, pine…) suffer of the 
>>fact they
>>  don’t have crypto hardware acceleration and do software encryption. 
>>And so is
>>  very slow (10-100× factor) even compared to low end amd64 CPU with 
>>AES-NI
>>  extension.
>
>According to 'openssl speed aes-128-cbc' the Allwinner A20 CPU in 
>Banana Pro is
>capable of about 25 MBytes/sec in AES performance. While that won't 
>translate
>1:1 into Tor performance, as Farid noted in his case the CPU isn't 
>being a
>bottleneck, with only 10-20% CPU load observed.
>
>@Farid,
>
>>  According to top the CPU hovers around 10-20% most of the time.
>
>I wonder is it 20% across both cores, which could be 40% of one core 
>(since
>Tor is not multithreaded enough), and at least somewhat closer to not 
>being
>practically idle. Can you launch 'top' and press '1' there to check?
>
>Also seems unclear why it didn't get the guard flag for so long, does 
>your
>public IP address change from time to time? Or do you turn the relay 
>off and
>on for whatever reason.
>
>--
>With respect,
>Roman
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