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bluesmoon avatar bluesmoon commented on June 13, 2024

API described sort of over here:
http://ecmanaut.blogspot.com/2010/06/google-bom-feature-ms-since-pageload.html

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bluesmoon avatar bluesmoon commented on June 13, 2024

So I can't add this in until I can confirm exactly what these times measure, ie, what the start and end points are. I can't find any documentation relating to that, but any pointers would be appreciated.

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eligrey avatar eligrey commented on June 13, 2024

I just added chromium.Interval to the bug. It's a timer with a μs resolution (on non-Windows OSes) as opposed to the ms resolution of Date. I happen to have a timer script that utilizes it, which serves as a good example.

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bluesmoon avatar bluesmoon commented on June 13, 2024

But that still doesn't tell me what the start and end points are, ie, does it measure from page unload, beforeunload, first byte, dns lookup, tcp connect, http request, or something else and does it stop at onload, ondomcontentready, first byte, last byte or something else?

Without this information I can't reliably match it to anything else we're measuring.

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eligrey avatar eligrey commented on June 13, 2024

Since there's no documentation on chrome.csi and chrome.loadTimes, you can always just check the source itself.

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bluesmoon avatar bluesmoon commented on June 13, 2024

ok, this helps somewhat. It looks like chrome.csi().pageT is what we want only if chrome.loadTimes.requestTime is not null. I think I can start with that and then add more checks later as I understand it better.

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bluesmoon avatar bluesmoon commented on June 13, 2024

Lookup w.chrome.csi() for timing information if the user is on chrome and other methods fail.
Closed by adc918f

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