Faidon,

Ori correct me if I am wrong but analytics team has no instrumentation code to measure performance. We store data that other teams produce.

In the case of navigation timing there are events storing the data on EventLogging database for example:

https://meta.wikimedia.org/wiki/Schema:NavigationTiming

This data is been collected by the performance team and analyzed by Aaron prior for other purposes, I think you should consult with Ori to see if it would be suitable to measure what you are interested on, seems like if you have a big enough dataset it would work.

Thanks,

Nuria

On Mon, Feb 10, 2014 at 3:37 PM, Faidon Liambotis <faidon@wikimedia.org> wrote:

Hi folks,

As you've probably heard, last week we deployed ulsfo in production, reducing latency for Oceania, East/Southeast Asia & US/Canada pacific/west coast states. My estimation of the user base affected by this is 360 million users (as in, Internet users, not Wikipedia users).

I was wondering if you have an easy way to measure and plot the impact in page load time, perhaps using Navigation Timing data?

The operations team has spent a considerable amount of time and money to deploy ulsfo and I believe it'd be useful for us and the organization at large to be able to quantify this effort.

The exact dates of the rollout by country/region codes can be found in operations/dns' git history: https://git.wikimedia.org/summary/?r=operations/dns.git
(the commits should be self-explanatory, but I'd be happy to clarify if needed)

Thanks!
Faidon

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