x/pkgsite: slower loads than godoc.org

[crawshaw]

Comparing two package doc page loads in Chrome's network inspector. Caching disabled, from Sydney Australia. Best of several loads:

https://godoc.org/net/http

8 requests
162 kB transferred
515 kB resources
Finish: 1.36 s
DOMContentLoaded: 1.21 s
Load: 1.23 s

https://pkg.go.dev/net/http

18 requests
163 kB transferred
388 kB resources
Finish: 2.05 s
DOMContentLoaded: 1.59 s
Load: 1.68 s

The total transferred content is roughly the same, but time to DOMContentLoad and final Load is significantly longer. The qualitative result is pkg.go.dev feels like the slow option.

[julieqiu]

Thanks for the feedback, @crawshaw! We'll work on making this experience better.