[dtaht]

speedtest.net added support for tracking latency under load a few years ago. they show ping during up/dl now. That's the number to show your colleague.

However they tend to use something like the 75th percentile and throw out real data. The waveform bufferbloat test does 95% and supplies whisker charts. cloudflare also.

No web test tests up + down at the same time, which is the worst scenario. crusader and flent.org's rrul test do.

Rathan than argue with your colleague, why not just slap an OpenWrt box as a transparent bridge inline and configure CAKE SQM?

[imp0cat]

Next time you need to assess your connection's capabilities, try https://speed.cloudflare.com/ instead of speedtest.net. Much more informative.

[thomasjudge]

Would you put the "OpenWrt box as a transparent bridge inline" between your home router and the cable modem, or on the house side of the home router?

[dtaht]

I would replace the home router with an OpenWrt router.

[matheusmoreira]

One of the best things I've ever done. OpenWrt is so good. SQM helps a lot with latency.