Andy Davies

@AndyDavies

Independent Web Performance Consultant. Arduino dabbler, veg grower. Husband to , Dad to and Jon He/Him Co-organiser

Gloucestershire, UK
Vrijeme pridruživanja: listopad 2007.

Medijski sadržaj

  1. 3. velj

    And the reason priorities matter in HTTP/2 is because browsers (esp. Chrome) expect servers to respect them In this example, because the server ignores priorities the high priority fonts get stuck behind lower priority images

  2. 31. sij
    Odgovor korisniku/ci

    From a blog post I need to finish…

  3. 28. sij

    After after 's story about selling users' browsing data you might think that Avast would have changed their advertising strategy…

  4. 24. sij

    This map has Berkley in the wrong place - it's a five (ish) miles north of Oldbury-on-Severn Map is from

  5. 23. sij
    Odgovor korisnicima

    But when I add a few categories to the trace, the WPT trace shows the work as layout

  6. 23. sij
    Odgovor korisniku/ci

    Not seeing the same degree of delay on a Alcatel 1x

  7. 23. sij
    Odgovor korisniku/ci

    This is what the Stack Chart looks like - doesn't quite convey the issue in the same way Has the check box for User Timing always been there (and I've not spotted it?)

  8. 22. sij

    The new visualisation UI will import traces from Chrome too See: for more

    Prikaži ovu nit
  9. 22. sij

    Been using Firefox's profiler quite a bit lately. The FlameGraph (or chart as I described it to someone the other night) aggregates the output from the profiler and really helped get to the bottom of a client issue really quickly

    Prikaži ovu nit
  10. 21. sij

    Real misdirection from … Spot the focus on when products were introduced rather than when they actually stopped selling them I can accept older products might not get updates but disabling updates to current products because I've got an older one too isn't acceptable

  11. 20. sij
    Odgovor korisniku/ci
  12. 19. sij

    Wireshark Question… When I add ocsp.serialNumber as a column it's always blank, but ocsp.certStatus seems to work OK Any ideas why?

  13. 18. sij

    Prototyping hardware for some mobile WebPageTest agents As I add some more phones will probably move Raspberry Pi to rear DIN rail Also not sure about the phone clamp Would have preferred to use a 19” desk rack but don’t have space ATM

    Mobile phone, and Raspberry Pi mounted on extruded aluminium
  14. 13. sij

    What's the black vertical line that appears in later steps of a scripted test?

    Excerpt of Page load waterfall from WebPageTest
  15. 7. sij
    Odgovor korisniku/ci

    Oh mobile is way worse! Happy New to you too!

  16. 3. sij

    Cardiff Arms Park!

  17. 27. pro 2019.

    Unicorn Duct Tape! My brother finds the best presents!

  18. 20. pro 2019.

    Can you guess what film is off to see today? (We’re going too)

  19. 9. pro 2019.
    Odgovor korisnicima

    I’ve got one of those too…

  20. 9. pro 2019.

    After a couple of days poking around, can reliable extract TLS keys from iOS Safari and decrypt companion packet capture in Wireshark As an example, here's a capture for the BBC News home page decrypted Would be nice if Apple gave us an easy way to do this but FTW!

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