[metrics-team] Unusually slow OnionPerf measurements

[Silvia [Hiro]]

Hi,

I have increased memory and run updates on op-nl. Let's see if it was
just something minor.

More updates tomorrow.

-hiro/silvia


On 06/06/17 13:13, Silvia [Hiro] wrote:
> 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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