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w3c / resource-timing

Resource Timing
https://w3c.github.io/resource-timing/
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Why is there noticeable gap between requestStart and connectEnd? #365

Open xiaofud opened 1 year ago

xiaofud commented 1 year ago

Hello, we find that there is up to 200ms delay between requestStart and connectEnd and we are using HTTP2 already. Why browser seems to "block" some time after the connection establishment (or reuse) ?

noamr commented 1 year ago

As described in the spec, you might encounter queuing by the network stack, browser or OS.