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Incorrect timings #23

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paulirish opened this issue Sep 5, 2017 · 3 comments
Closed

Incorrect timings #23

paulirish opened this issue Sep 5, 2017 · 3 comments

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@paulirish
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Trying out GHD with a few sites and not seeing the same sort of latency I was expecting.

Went to http://stevesouders.com/cuzillion/ (use http not https) and made a page like with 2,3 s of latency on the script/style:

image

(link is http://stevesouders.com/cuzillion/?c0=hj1hfff2_0_f&c1=hc1hfff3_0_f&c2=bi1hfff0_0_f&t=1504636759204 if that still works)

I saved the HAR. Then viewing it in a new devtools window, the data looks like this:

image

Then sent to the vagrant and loaded things up, the way I think it should... But the results aren't looking right:

image

The "page load time" measurement in JS also thinks its a ~600ms page rather than a ~3000ms one.

obv no rush on this, just reporting it. :)

@paulirish
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the har file: soud.har.zip

@paulirish
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Ah I think this is #9

@lawnsea
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lawnsea commented Sep 5, 2017

Yeah, this is #9. Currently, GHD only simulates network latency. My current thinking is that we might be able to use Server Timing data when available.

@lawnsea lawnsea closed this as completed Sep 5, 2017
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