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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Web Inspector: visualize code hotness using basic block execution counts"
href="https://bugs.webkit.org/show_bug.cgi?id=146115#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Web Inspector: visualize code hotness using basic block execution counts"
href="https://bugs.webkit.org/show_bug.cgi?id=146115">bug 146115</a>
from <span class="vcard"><a class="email" href="mailto:burg@cs.washington.edu" title="Brian Burg <burg@cs.washington.edu>"> <span class="fn">Brian Burg</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=146115#c1">comment #1</a>)
<span class="quote">> > I'm a much bigger fan of small widgets in gutters (left side) ...
>
> I’m willing to explore that option.
>
> I have used Adobe Theseus
> (<a href="https://github.com/adobe-research/theseus#theseus">https://github.com/adobe-research/theseus#theseus</a>) which adds call counters
> for every function. I find it very helpful to see numbers changing in
> realtime.</span >
Yeah, I love Tom's work on Theseus. We gotta take that stuff and ship it!
I am concerned that real numbers won't scale once you get to hot loops. The widely varying input domain also make it difficult to write a generic binning function.
A nice thing about gutters is that it provides a good place to hover for more information, either in a popover or by adding underlines to different subexpressions on the hovered line.
This is the most relevant academic project, which I think has a cool idea and a terrible visual encoding: <a href="http://scg.unibe.ch/research/senseo">http://scg.unibe.ch/research/senseo</a>
<span class="quote">> I haven’t used any software that adds a heat map overlay on top of code. I
> think it could be useful to give a quick glance of what happened. We already
> gray out unexecuted code and I find it very helpful. Heat maps could be an
> extension to that. </span >
In the other bug, I believe Oliver was referring to colors in the rows/cells of a profiler. Color seems fine there since a user isn't trying to comprehend what the words mean as much as find the heaviest line.</pre>
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