Re: [tor-relays] Fast flag - wrong speed in dir-spec.txt?

2019-08-30 Thread Michael Gerstacker
Yep makes sense now.
Thanks for clearing this Roger:)

Am Fr., 30. Aug. 2019 um 10:31 Uhr schrieb Roger Dingledine <
a...@torproject.org>:

> On Fri, Aug 30, 2019 at 05:52:22PM +1000, teor wrote:
> > The default value for AuthDirFastGuarantee is still 100 KB.
> >[...]
> > 6/9 authorities use measured bandwidth, rather than reported bandwidth.
> > So your relay won't get Fast unless it is measured by the bandwidth
> authorities,
> > faster than 100 KB.
>
> Right, it's this last part that's critical here. Directory authorities
> that do their own "bandwidth authority" measurements use their bwauth
> numbers rather than the self-reported numbers in the relay descriptor,
> for deciding whether to assign flags.
>
> If you go to the very bottom of
> https://consensus-health.torproject.org/#relayinfo
> and put in this relay nickname or fingerprint, you'll see that 4
> directory authorities -- the ones not running bandwidth authorities --
> look at the self-reported number, and give the relay the Fast flag. But
> 5 of them, which are running bwauths, use their own numbers, which put
> the relay below the threshold. And since 5 is a majority of 9, their
> choice wins.
>
> Hope that makes sense,
> --Roger
>
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Re: [tor-relays] Fast flag - wrong speed in dir-spec.txt?

2019-08-30 Thread Roger Dingledine
On Fri, Aug 30, 2019 at 05:52:22PM +1000, teor wrote:
> The default value for AuthDirFastGuarantee is still 100 KB.
>[...]
> 6/9 authorities use measured bandwidth, rather than reported bandwidth.
> So your relay won't get Fast unless it is measured by the bandwidth 
> authorities,
> faster than 100 KB.

Right, it's this last part that's critical here. Directory authorities
that do their own "bandwidth authority" measurements use their bwauth
numbers rather than the self-reported numbers in the relay descriptor,
for deciding whether to assign flags.

If you go to the very bottom of
https://consensus-health.torproject.org/#relayinfo
and put in this relay nickname or fingerprint, you'll see that 4
directory authorities -- the ones not running bandwidth authorities --
look at the self-reported number, and give the relay the Fast flag. But
5 of them, which are running bwauths, use their own numbers, which put
the relay below the threshold. And since 5 is a majority of 9, their
choice wins.

Hope that makes sense,
--Roger

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Re: [tor-relays] Fast flag - wrong speed in dir-spec.txt?

2019-08-30 Thread teor
Hi,

> On 30 Aug 2019, at 17:21, Michael Gerstacker 
>  wrote:
> 
> Hi Torproject,
> 
> as far as i can see my relay currently can advertise 560 KiB/s. That are 
> 573,44 KB/s.
> 43C7BC2E17FB26B204EC0BD9AA784E4736979087
> 
> Following your dir-specs it should get the "Fast" flag if it can provide more 
> than 100KB/s.
> https://gitweb.torproject.org/torspec.git/tree/dir-spec.txt#n2595

The default value for AuthDirFastGuarantee is still 100 KB.
I don't know if a majority of authority operators have set it higher.

The other way a relay gets Fast is if it is in the fastest 7/8ths of the 
routers.

> At my other relay i already saw it providing 562 KiB/s and it got the "Fast" 
> flag.
> A9DB853547A6459AB5190E62BF2F7B8F068FEB0A
> 
> It seems the limit is above 560 KiB/s?
> If i remember it right then i already read somewhere that the requirements 
> are now higher than 100 KB/s so i guess your documentation is wrong?
> Am i missing something why my relay with 560 KiB/s dont get the "Fast" flag?

6/9 authorities use measured bandwidth, rather than reported bandwidth.
So your relay won't get Fast unless it is measured by the bandwidth authorities,
faster than 100 KB.

T



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