Re: [tor-relays] Tor bandwidth scanner "longclaw" slow to the US West Coast

2020-08-23 Thread Neel Chauhan

Hi juga,

Sorry for the delayed response.

On 2020-08-18 10:05, juga wrote:


thanks for reporting this issue. Replying inline:


No problem.


Tor bandwidth scanners and directory authorities not necessarily run in
the same machine/IP and it's the case of longclaw's bandwidth scanner,
which is located in the US East Coast.


Good to know.

If the reason for lower bandwidth measurements is the location -it 
could
be other reasons- then it's weird that it would affect the US West 
Coast

and not Europe, given it's located in the US East Coast.


Thanks for telling me. It seems weird, West Coast congestion maybe?


To understand why this is happening, it's very helpful that you give us
this information.
I personally suspect it might not be related to the scanner location.
We'll investigate this as part of the issue you opened at
https://gitlab.torproject.org/tpo/network-health/sbws/-/issues/40014.

It might take some weeks, since a lot of the work done on this topic is
volunteer work. Apologies in advance about it.


Understood.

I don't mind helping if you need help. I am a Core Tor contributor, but 
am also open to working with sbws.



Is anyone else hosting West Coast relays having this issue?


Good question.

Is

"longclaw" actually measuring bandwidth from Europe? If so, WHY?


No, it's not measuring bandwidth from Europe.


Good to hear.



I got in contact with "longclaw"'s admin and he wasn't too helpful.


It looks to me that the longclaw's admin has been helpful if they have
suggested you to write to this mailing list, so that more people can
check this issue and/or they have suggested you to report an issue in
gitlab so that the bandwidth scanner developers won't forget about it 
:)


Also, not all directory authorities run bandwidth scanners and not all
of them know about the complexity on how bandwidth is determined.

Hope it helps.


I guess it's really easy to complain and blame longclaw's admin.

It could also be peering, but I am not sure. Wave does have congestion 
issues from time to time, but this affects more than Tor.


Sometimes, faravahar also may have this issue, but not to the same 
extent, and I can't confirm if this is true.


Thank you for responding.


Best,
juga


-Neel
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Re: [tor-relays] Tor bandwidth scanner "longclaw" slow to the US West Coast

2020-08-20 Thread Neel Chauhan
Surprisingly, longclaw stopped measuring and the consensus weights shot 
up.


My home ISP, "Wave G" has shitty peering so it didn't shot up as much. 
But my Psychz dedicated server fortunately did see a solid increase.


-Neel

On 2020-08-19 16:02, i...@backplanedns.org wrote:

Same here

https://metrics.torproject.org/rs.html#details/29BBD80A1702C7FDEF6557C492F44E9EBAB2854A

_Sent from my T-Mobile 4G LTE device_

-- Original message--
From: Eddie
Date: Wed, Aug 19, 2020 6:40 PM
To: tor-relays@lists.torproject.org;
Cc:
Subject:Re: [tor-relays] Tor bandwidth scanner "longclaw" slow to the
US West Coast

Not sure if my relay is similar, but I've been seeing a slow fall in
consensus weight and advertised bandwidth over the past few months
even
though absolutely nothing has changed at my end.  Well, apart from me
*increasing* the RelayBandwidth settings.

Also before I shut my relay down for a couple of weeks late last year,

it had, and maintained guard status for about 6 months.  Now it yo-yos

in and out of guard on a regular basis.

https://metrics.torproject.org/rs.html#details/D195E5CE8AE77BAC91673E6CFB7BD0AF57281646

Cheers.

On 8/15/2020 5:41 PM, Neel Chauhan wrote:

Hi,

Is anyone else hosting West Coast relays having this issue? Is
"longclaw" actually measuring bandwidth from Europe? If so, WHY?



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Re: [tor-relays] Tor bandwidth scanner "longclaw" slow to the US West Coast

2020-08-20 Thread i...@backplanedns.org
Same 
herehttps://metrics.torproject.org/rs.html#details/29BBD80A1702C7FDEF6557C492F44E9EBAB2854ASent
 from my T-Mobile 4G LTE device-- Original message--From: EddieDate: 
Wed, Aug 19, 2020 6:40 PMTo: tor-relays@lists.torproject.org;Cc: Subject:Re: 
[tor-relays] Tor bandwidth scanner "longclaw" slow to the US West CoastNot sure 
if my relay is similar, but I've been seeing a slow fall in 
consensus weight and advertised bandwidth over the past few months even 
though absolutely nothing has changed at my end.  Well, apart from me 
*increasing* the RelayBandwidth settings.

Also before I shut my relay down for a couple of weeks late last year, 
it had, and maintained guard status for about 6 months.  Now it yo-yos 
in and out of guard on a regular basis.

https://metrics.torproject.org/rs.html#details/D195E5CE8AE77BAC91673E6CFB7BD0AF57281646

Cheers.


On 8/15/2020 5:41 PM, Neel Chauhan wrote:
> Hi,
>
> Is anyone else hosting West Coast relays having this issue? Is 
> "longclaw" actually measuring bandwidth from Europe? If so, WHY?
>

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Re: [tor-relays] Tor bandwidth scanner "longclaw" slow to the US West Coast

2020-08-19 Thread Eddie
Not sure if my relay is similar, but I've been seeing a slow fall in 
consensus weight and advertised bandwidth over the past few months even 
though absolutely nothing has changed at my end.  Well, apart from me 
*increasing* the RelayBandwidth settings.


Also before I shut my relay down for a couple of weeks late last year, 
it had, and maintained guard status for about 6 months.  Now it yo-yos 
in and out of guard on a regular basis.


https://metrics.torproject.org/rs.html#details/D195E5CE8AE77BAC91673E6CFB7BD0AF57281646

Cheers.


On 8/15/2020 5:41 PM, Neel Chauhan wrote:

Hi,

Is anyone else hosting West Coast relays having this issue? Is 
"longclaw" actually measuring bandwidth from Europe? If so, WHY?




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Re: [tor-relays] Tor bandwidth scanner "longclaw" slow to the US West Coast

2020-08-18 Thread Felix

Hi,

Am 16.08.2020 um 02:41 schrieb Neel Chauhan:

Hi,

I believe the Tor bandwidth scanner nicknamed "longclaw" is measuring
relays in the US West Coast worse than other bandwidth scanners in North
America. This happens on multiple ISPs, both ones I have and ones I don't.


The plots below can be a coincidence, but it shows at least there are
more parameters for unexpected observations:

The consensus of a relay in Germany shows:

moria1 Fast Guard  !HSDir Run Stab V2Dir Valid bw=17700
tor26  Fast Guard  HSDir  Run Stab V2Dir Valid
dizum  Fast Guard  HSDir  Run Stab V2Dir Valid
gabel. Fast Guard  HSDir  Run Stab V2Dir Valid bw=21800
danne. Fast Guard  HSDir  Run Stab V2Dir Valid
maatu. Fast Guard  HSDir  Run Stab V2Dir Valid bw=24000
farav. Fast Guard  HSDir  Run Stab V2Dir Valid bw=21500
longc. Fast !Guard HSDir  Run Stab V2Dir Valid bw=1800
bastet Fast Guard  HSDir  Run Stab V2Dir Valid bw=17300

The mtr plot for the same server shows the hop
"100ge1-1.core1.par2.he.net" is generating many packets losses.
Where "100ge14-1.core1.nyc4.he.net" puts milli seconds into the game:

   Packets   Pings
 HostLoss%   Snt   Last   Avg  Best  Wrst StDev
 1. 91-143-90-251.gw.dsw-c6ka.as35366.net
 0.0%510.3   1.4   0.3  46.3   6.4
 2. po162.bbsw-h3-j1cr.as35366.net
 0.0%510.5   0.9   0.3   9.3   1.4
 3. po150.bbsw-h2-j1a.as35366.net
 0.0%510.4   4.5   0.3 189.5  26.4
 4. po205.bbsw-h4a-fra.as35366.net
 0.0%517.3   7.6   7.0  24.4   2.4
 5. 10gigabitethernet2-3.core1.fra1.he.net
 0.0%509.0  11.1   7.1  32.6   6.8
 6. 100ge16-2.core1.fra1.he.net
 0.0%507.7   7.6   7.3  13.9   0.9
 7. 100ge1-1.core1.par2.he.net
51.0%50   17.0  20.2  16.7  39.2   6.6
 8. 100ge14-1.core1.nyc4.he.net
 0.0%50   87.1  90.1  87.1 102.7   4.3
 9. 100ge10-1.core1.ymq1.he.net
 0.0%50   99.4 101.3  99.2 109.7   3.2
10. estruxture-data-centers.10gigabitethernet1-1-40.switch3.ymq1.he.net
 0.0%50   99.3 101.0  99.1 136.5   6.2
11. 64.15.69.54  0.0%50   98.2  98.1  97.8  99.0   0.2
12. anon.riseup.net  0.0%50   98.4  98.4  98.0 100.3   0.5

Relays at other hosting locations choose for different routes and
longclaw sees them perfectly equal. It*s a case by case.

--
Cheers, Felix
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Re: [tor-relays] Tor bandwidth scanner "longclaw" slow to the US West Coast

2020-08-18 Thread juga
Hi,

thanks for reporting this issue. Replying inline:

Neel Chauhan:
> Hi,
> 
> I believe the Tor bandwidth scanner nicknamed "longclaw" is measuring
> relays in the US West Coast worse than other bandwidth scanners in North
> America. This happens on multiple ISPs, both ones I have and ones I don't.

Tor bandwidth scanners and directory authorities not necessarily run in
the same machine/IP and it's the case of longclaw's bandwidth scanner,
which is located in the US East Coast.

> 
> This includes two Tor exit instances on a dedicated server hosted in Los
> Angeles on Psychz Networks (AS40676):
> 
> https://metrics.torproject.org/rs.html#details/156AAC3FAD1ACC8906316519DCB444B8C77E4EBF
> 
> https://metrics.torproject.org/rs.html#details/A69CEB30328B1E85C6B167FECAF2F509CBD9517F
> 
> 
> And two Tor non-exit instances on a home server in Seattle on Wave
> Broadband (AS11404), using a symmetrical Gigabit link:
> 
> https://metrics.torproject.org/rs.html#details/B0F9BA27944FA59E3B1A182208FF7C0CFF5497B2
> 
> https://metrics.torproject.org/rs.html#details/DB710B14D7329B7289CFCC547F48EF53F812C40D
> 
> 
> The consensus weight values from longclaw are much lower than other
> North American bandwidth scanners, according to
> https://consensus-health.torproject.org/.
> 
> This also affects other relays/ISPs on the West Coast US/Canada, such as
> Emerald Onion, AT U-verse, Sonic.net, and QuadraNet. The same
> ISPs/hosts in the East Coast aren't affected.
> 
> This discrepancy in the measurement disproportionately favors European
> and East Coast US/Canada relays at the expense of West Coast relays,
> centralizing the Tor network even further than it already was. This
> wasn't an issue in the past, even as early as a few months ago. It only
> started appearing around June.

If the reason for lower bandwidth measurements is the location -it could
be other reasons- then it's weird that it would affect the US West Coast
and not Europe, given it's located in the US East Coast.

To understand why this is happening, it's very helpful that you give us
this information.
I personally suspect it might not be related to the scanner location.
We'll investigate this as part of the issue you opened at
https://gitlab.torproject.org/tpo/network-health/sbws/-/issues/40014.

It might take some weeks, since a lot of the work done on this topic is
volunteer work. Apologies in advance about it.

> 
> Is anyone else hosting West Coast relays having this issue? 

Good question.

Is
> "longclaw" actually measuring bandwidth from Europe? If so, WHY?

No, it's not measuring bandwidth from Europe.

> 
> I got in contact with "longclaw"'s admin and he wasn't too helpful.

It looks to me that the longclaw's admin has been helpful if they have
suggested you to write to this mailing list, so that more people can
check this issue and/or they have suggested you to report an issue in
gitlab so that the bandwidth scanner developers won't forget about it :)

Also, not all directory authorities run bandwidth scanners and not all
of them know about the complexity on how bandwidth is determined.

Hope it helps.

Best,
juga

-- 
they/them

http://zkaan2xfbuxia2wpf7ofnkbz6r5zdbbvxbunvp5g2iebopbfc4iqmbad.onion/vks/v1/by-fingerprint/2DA81D01455C3A0032198850F305447AF806D46B
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[tor-relays] Tor bandwidth scanner "longclaw" slow to the US West Coast

2020-08-15 Thread Neel Chauhan

Hi,

I believe the Tor bandwidth scanner nicknamed "longclaw" is measuring 
relays in the US West Coast worse than other bandwidth scanners in North 
America. This happens on multiple ISPs, both ones I have and ones I 
don't.


This includes two Tor exit instances on a dedicated server hosted in Los 
Angeles on Psychz Networks (AS40676):


https://metrics.torproject.org/rs.html#details/156AAC3FAD1ACC8906316519DCB444B8C77E4EBF
https://metrics.torproject.org/rs.html#details/A69CEB30328B1E85C6B167FECAF2F509CBD9517F

And two Tor non-exit instances on a home server in Seattle on Wave 
Broadband (AS11404), using a symmetrical Gigabit link:


https://metrics.torproject.org/rs.html#details/B0F9BA27944FA59E3B1A182208FF7C0CFF5497B2
https://metrics.torproject.org/rs.html#details/DB710B14D7329B7289CFCC547F48EF53F812C40D

The consensus weight values from longclaw are much lower than other 
North American bandwidth scanners, according to 
https://consensus-health.torproject.org/.


This also affects other relays/ISPs on the West Coast US/Canada, such as 
Emerald Onion, AT U-verse, Sonic.net, and QuadraNet. The same 
ISPs/hosts in the East Coast aren't affected.


This discrepancy in the measurement disproportionately favors European 
and East Coast US/Canada relays at the expense of West Coast relays, 
centralizing the Tor network even further than it already was. This 
wasn't an issue in the past, even as early as a few months ago. It only 
started appearing around June.


Is anyone else hosting West Coast relays having this issue? Is 
"longclaw" actually measuring bandwidth from Europe? If so, WHY?


I got in contact with "longclaw"'s admin and he wasn't too helpful.

Best,

Neel Chauhan

===

https://www.neelc.org/
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