[metrics-team] Unusually slow OnionPerf measurements

[Silvia [Hiro]]

Hi Karsten,

I am going to check the logs now to see if there was some issues on the VMs.

As far as I know nothing changed on our configuration of the VMs. I did
renew the ssl certificates but I do not thing that has anything to do
with it (also because all three VMs show the same pattern and not all of
them needed certs renewed).

More soon,

-hiro/silvia

On 06/06/17 12:17, Karsten Loesing wrote:
> Hi Silvia, Rob, list,
> 
> I noticed today that OnionPerf "public server" measurements went up a
> lot around May 22:
> 
> https://metrics.torproject.org/torperf.html?start=2017-05-06&end=2017-06-06&source=all&server=public&filesize=50kb
> 
> I quickly looked at the .tpf files available here:
> 
> https://collector.torproject.org/recent/torperf/
> 
> I found that the time between starting a request and writing the HTTP
> request ("request" below) can be unusually high.  Likewise, the time
> until receiving the first response ("response" below) has a quite large
> maximum, too.
> 
>     request           response         first50          last50
>  Min.   :   20.0   Min.   :  30.0   Min.   : 20.0   Min.   :  0.0
>  1st Qu.:  150.0   1st Qu.: 140.0   1st Qu.: 80.0   1st Qu.: 80.0
>  Median :  280.0   Median : 280.0   Median :150.0   Median :150.0
>  Mean   :  597.7   Mean   : 387.3   Mean   :180.3   Mean   :183.3
>  3rd Qu.:  430.0   3rd Qu.: 390.0   3rd Qu.:240.0   3rd Qu.:260.0
>  Max.   :11610.0   Max.   :3100.0   Max.   :630.0   Max.   :890.0
> 
> (These numbers come from op-nl-51200-2017-06-04.tpf.)
> 
> What's going on there?  Is there anything unusual in the tor logs?  If
> not, what could the reason?  What changed on May 22?
> 
> Thanks!
> 
> All the best,
> Karsten
> 

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