Asm-dom, a minimal WebAssembly virtual DOM to build C++ SPA

Re:Asm-dom, a minimal WebAssembly virtual DOM to build C++ SPA by austincheney on Monday March 16, 2020 @12:08PM (#22593823)

The UI is not developed with a phone in mind, assuming you are talking about the Sparser application. I just attempted this in my IPhone for the first time. Here are the numbers according to the tool (the numbers output to the title box in the top left corner of the screen):

* 108ms raw execution time

* 857ms total browser visual render time

I used this code: https://raw.githubusercontent.com/prettydiff/prettydiff/mast... which generated a table of 23010 records.

The execution performance was better than I expected for a phone and I am not seeing any delay in user interaction. What were your numbers?

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Re:Asm-dom, a minimal WebAssembly virtual DOM to build C++ SPA by Tade0 on Monday March 16, 2020 @12:31PM (#22594119)

I've pasted that snippet and while it did indeed render fast, adding a newline anywhere caused the whole thing to hang for 12 seconds on my phone. Try it - you'll get a similar effect.

It's easy to just render a large page from scratch. Reflowing half of it by e.g. adding some vertical space is what's really hard.

EDIT: Actual numers are lower, but still troubling:

Parsing time: 771.7 milliseconds.

Browser time: 12078.1 milliseconds.

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