[tor-relays] Tor Relay - RelayBandwidthRate vs. RelayBandwidthBurst

[petrarca at protonmail.ch]

Great, and many thanks - that explains it: if the bursting-timespan is 1 sec only only I obviously can't see that bandwidth bursting with my resolution of 10 sec measurements.



‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Thursday, 22. August 2019 05:02, teor <teor at riseup.net> wrote:

> Hi,
>
> > On 20 Aug 2019, at 20:23, petrarca at protonmail.ch wrote:
> > I'm struggling a bit with the two config options for RelayBandwidthRate and RelayBandwidthBurst - what I currently have in my torrc config file is:
> > ...
> > RelayBandwidthRate 8 Mbit
> > RelayBandwidthBurst 12 Mbit
> > ...
> > My assumption was that on average the Relay would consume 8 Mbps max. but over a shorter period of time also up to 12 Mbps in case needed.
> > What I see (historical monitor data at 10 s intervals for the past 6 months) is that the bandwidth usage never exceeds 8 Mbps. I can also see the consumption to be levelled out at 8 Mbps for minutes or hours so it looks like there would be a need for more bandwidth.
>
> Yes the Tor network does need more bandwidth, particularly for exits.
>
> > My question: why can't I see the bandwidth usage going above 8 Mbps and making use of the allowed burst? Btw, I'm typically using the latest stable tor, currently the relay is on 0.4.0.5.
>
> The burst is over a very short period of time.
> I think it's about 1 second.
>
> The rate is averaged is over a slightly longer period of time, and
> includes any burst bandwidth. That is, if the bandwidth burst to
> 12 Mbps in the last second, the bandwidth in this second will be
> 4 Mbps. The lower bandwidth in the next second keeps the average to
> 8 Mbps.
>
> T
>
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> teor
>
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