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Execution Trace Visualization Experiments

A project log for Bithacks

The Joys of Computation

aleksandar-bradicAleksandar Bradic 11/25/2016 at 23:597 Comments

Naive Quicksort (N=75)

Quicksort in-place (N=75)

Discussions

Yann Guidon / YGDES wrote 11/26/2016 at 12:52 point

Rule of the web : be nice to all the viewers.

Why do you even put a 69Mpix picture when it will be scaled down to 7% by the browser ?

The HaD page layout limits the displayed width anyway, it's useless to put hi-res data on the logs or pages... 800px wide is a reasonable width, I usually do 600 or 700px so it displays everywhere nicely. Except the banners, 1500px but only 400 or 500px high.

On my old computer, careless users could crash my computer just with an insanely high resolution picture. It irks me.

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Eric Hertz wrote 11/26/2016 at 13:16 point

Yah never know who's in on the planned-obsolescence game! Heck, they might not even know.

Oh, and, according to some, these days, the "rule of the web" is that whatever you put up has to work on a phone-screen first-and-foremost. I call 'em AtEase-users, but, yahknow, different-strokes-for-different-folks, I guess.

I find it most-offensive that my browser's capable of taking over my computer to that extent! What is this, the Pre-emptive multitasking-era, revisited? I literally had to push the Power Button to get a response... even CTRL-ALT-DEL didn't!

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Yann Guidon / YGDES wrote 11/26/2016 at 14:51 point

I totallyly agree.

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Aleksandar Bradic wrote 11/26/2016 at 03:09 point

It seems to be a resolution / compression thing. These are ~200Kb files each but 8775x7927 resolution (they have been autogenerated). DEFLATE does a great job at compressing them, but I guess there are no guarantees there will be enough resources to actually render on the client side after the decompress. 

I am wondering if there's a "black square" type of attack here somewhere? Might give it a try on Facebook ;) 

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Eric Hertz wrote 11/26/2016 at 03:32 point

hah, I thought maybe there was a bit of "attack" going on here... Not sure I want to share my browser-info with yah, now ;) Let's just say we're working on a P4 with 2G RAM, but the RAM/swap usage doesn't seem to increase too dramatically, 'bout 1G RAM-usage, 250MB SWAP.

Am shocked it's capable of slowing down the entire system, rather than being relegated to the browser itself... maybe I've got to adjust its "niceness".

Oh, there's more than one image, here? I only ever get the first.

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Aleksandar Bradic wrote 11/26/2016 at 02:57 point

That's weird (and interesting ;) )What browser are you using?

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Eric Hertz wrote 11/26/2016 at 02:15 point

Is there something funky about that first image...? When I scroll upon this update in my feed, the whole computer starts stuttering, quite dramatically for seconds at a time; mouse-movement/clicks, even the activity-monitor stalls. But only when I scroll upon this update in my newsfeed, or open this page.

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