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Today's Topics:
1. Re: Why can't I see more traffic? (is my banana too weak?) (Aeris)
2. Re: Why can't I see more traffic? (is my banana too weak?)
(Roman Mamedov)
3. Re: Why can't I see more traffic? (is my banana too weak?)
(Logforme)
4. Re: Why can't I see more traffic? (is my banana too weak?) (Aeris)
----------------------------------------------------------------------
Message: 1
Date: Sat, 03 Sep 2016 17:05:38 +0200
From: Aeris <aeris+tor@xxxxxxxxxx>
To: Farid Joubbi <joubbi@xxxxxx>
Cc: tor-relays@xxxxxxxxxxxxxxxxxxxx
Subject: Re: [tor-relays] Why can't I see more traffic? (is my banana
too weak?)
Message-ID: <3248493.tyuSCxODC6@home>
Content-Type: text/plain; charset="utf-8"
> Could it be that it is due to the quite slow hardware, even though I know
> that it is able to push more traffic?
I notice too your relay got the guard flag very recently. So your relay is
currently probably not at full capacity and rather at a low one (relay usage
drops at guard flag assignment).
You have to wait 60 days from your guard flag to reach this point.
See
https://blog.torproject.org/blog/lifecycle-of-a-new-relay, you’re
currently at the beginning of the 3rd phase.
<3,
--
Aeris
Individual crypto-terrorist group self-radicalized on the digital Internet
https://imirhil.fr/
Protect your privacy, encrypt your communications
GPG : EFB74277 ECE4E222
OTR : 5769616D 2D3DAC72
https://café-vie-privée.fr/
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Message: 2
Date: Sat, 3 Sep 2016 20:14:08 +0500
From: Roman Mamedov <rm@xxxxxxxxxxx>
To: Aeris <aeris+tor@xxxxxxxxxx>
Cc: tor-relays@xxxxxxxxxxxxxxxxxxxx, Farid Joubbi <joubbi@xxxxxx>
Subject: Re: [tor-relays] Why can't I see more traffic? (is my banana
too weak?)
Message-ID: <20160903201408.178d30dc@natsu>
Content-Type: text/plain; charset="utf-8"
On Sat, 03 Sep 2016 16:53:25 +0200
Aeris <aeris+tor@xxxxxxxxxx> 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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Message: 3
Date: Sat, 03 Sep 2016 15:37:54 +0000
From: Logforme <m7527@xxxxxx>
To: tor-relays@xxxxxxxxxxxxxxxxxxxx
Subject: Re: [tor-relays] Why can't I see more traffic? (is my banana
too weak?)
Message-ID: <em4b0fc087-63e2-4672-be99-28f2687390a1@mats-win7>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
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@xxxxxxxxxxx>
Till: "Aeris" <aeris+tor@xxxxxxxxxx>
Kopia: tor-relays@xxxxxxxxxxxxxxxxxxxx; "Farid Joubbi" <joubbi@xxxxxx>
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@xxxxxxxxxx> 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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Message: 4
Date: Sat, 03 Sep 2016 18:06:59 +0200
From: Aeris <aeris+tor@xxxxxxxxxx>
To: Roman Mamedov <rm@xxxxxxxxxxx>
Cc: tor-relays@xxxxxxxxxxxxxxxxxxxx, Farid Joubbi <joubbi@xxxxxx>
Subject: Re: [tor-relays] Why can't I see more traffic? (is my banana
too weak?)
Message-ID: <4817647.aCTGf0bmfv@home>
Content-Type: text/plain; charset="utf-8"
> 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.
I don’t understand very well this fact, but CPU can be the bottleneck even if
load or CPU usage not at full capacity.
One of my Tor guard relay have the same CPU behaviour (see screenshot
enclosed).
2 instances at 50-60% CPU usage (as reported by htop), load around 0.70-0.80
(4 cores), RAM at 20% (400MB/2GB) but bandwidth not saturated (20Mbps only on
a 200Mbps line).
Perhaps because of the multiple changes of context (AES crypto, Tor software
logic, network IO…) and so a lot of wait/IRQ (as visible on the screen) and
not a fully used CPU.
> 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.
Perhaps a low bandwidth ?
Babylonian seems to be on the lower part of guard relay (2146/2313), possible
it hadn’t enough bandwith before end of august to get guard flags ?
Only the 25% fastest relays can get the guard flag. Today it’s around 2.5 MBps
advertised / 1MBps measured. Babylonian is just at the limit (2.45MBps
advertised, 600kBps measured).
<3,
--
Aeris
Individual crypto-terrorist group self-radicalized on the digital Internet
https://imirhil.fr/
Protect your privacy, encrypt your communications
GPG : EFB74277 ECE4E222
OTR : 5769616D 2D3DAC72
https://café-vie-privée.fr/
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