Jonathan Morton <chromatix99@gmail.com> writes:

>> On 3 Jun, 2020, at 7:48 pm, Dave Taht <dave.taht@gmail.com> wrote:
>>
>> I am of course, always interested in how they are measuring latency, and where.
>
> They don't seem to be adding more latency measurements once the
> download tests begin.  So in effect they are only measuring idle
> latency.

Yup, but they do seem to be amenable to fixing that:
https://github.com/cloudflare/worker-speedtest-template/issues/13

As for where the latency is measured to, it seems to be HTTP 'pings' to
the nearest Cloudflare CDN endpoint.

-Toke