On Tue, 25 Jun 2024 at 14:05, Lucas Pardue <[email protected]> wrote:

>
> It can be difficult to monitor and prove with actual data that end-users
> see meaningful performance improvements due to leveraging the features of
> QUIC.
>

I'm surprised, as I'd expected the faster connection setup to be a win
across all networks. But yes the specifics matter, and it's important to be
able to spot areas where it's slower.

As a platform or service operator, its likely that you'll have no idea what
> the KPIs of the web applications that pass through you are. Focusing on
> low-level observables, such as connection or request times doesn't give the
> full, actual, picture. There is a disjoint, that can be hard to fill.
>

My day job involves a lot of mobile network optimisation. We regularly
conduct drive tests to see the effect of network changes on end-user
performance. The services tested are necessarily limited. Seeing the
results of changes immediately and across the entire country, would be a
big win. But perhaps not a topic for this working group.


> There's only so much engineering hours to go around, and companies make a
> value judgement about where to invest that for peak ROI.
>
If there are performance wins to be had, they'll likely be wanting to see
> case studies before the CTO signs off on turning something on that might
> even have the slightest hint of beung able to cause some regression in
> performance or stability.
>

Great point. So in a ranking of potential web performance gains, HTTP/3 may
not place high enough. And in other companies, there could simply be a
shortage of data to understand where it should be ranked.

It also behoves me to mention we have QUIC powering the web in different
> ways than the OP question presents it.
>

Oh, definitely. QUIC goes far beyond this use case, and MASQUE for example
is an important building block for privacy partitioning. I'm all for
further deployment of QUIC. It's the first truly *evolvable* internet-scale
transport protocol.

Chris

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