Unescaped '<' error in exported SVG?

[timholy]

I was looking into package load times, and did the following (must do a Pkg.update() before trying this):

PROFILEVIEW_USETK=false
using DataFrames, ProfileView
@profile reload("DataFrames")
ProfileView.svgwrite("/tmp/reloadDataFrames.svg", C=true)

When I try to view the resulting file with chromium, it partially renders but then I get this:

This page contains the following errors:

error on line 13669 at column 70: Unescaped '<' not allowed in attributes values
Below is a rendering of the page up to the first error.

I don't get that error if I omit C=true.

CC @darwindarak, any ideas?

[timholy]

If I do this:

bt, lidict = Profile.retrieve();
for (k,v) in lidict
    str = string(v)
    if !isempty(search(str, "<"))
        println(str)
    end
end

then I get no output. So it doesn't seem that there's a "<" inside any of the function names or whatever.

[darwindarak]

I'm running into a different problem when using C=true. It takes a very long time for the images to render on Firefox and Chrome (both browsers prompted me to stop the script), but no errors are showing up on the console. Do you mind posting your SVG output on Gist? I'm pretty sure this issue is caused by the text scaling part of the code, just can't quite pinpoint it yet.

[timholy]

It's about 5Mb. I posted it to my google drive, but I'm getting a "sharing unavailable, try again later" message. I'll try again later. Thanks for looking at this!

[timholy]

OK, here it is: https://drive.google.com/file/d/0B3YGt0MI7OsWeEhDb2JNRks3a28/edit?usp=sharing

[timholy]

I figured it out, see df74874.

[timholy]

But wow is rendering slow. See JuliaLang/julia#7977 (comment).

[darwindarak]

Yeah, that makes this backend useless for larger datasets. I think it might be fixable though. Currently when the viewport is scaled, it's going over all the text and un-scaling it to prevent stretching. I think that's where the bottleneck is. I'm going to try for a rewrite this weekend to speed it up.

If only there was something like ProfileView for
the browser.

[timholy]

😄

Thanks for looking into this!

[waldyrious]

@darwindarak doesn't chrome have something like that? Although I believe it's just for the javascript engine, not the rendering engine.

[darwindarak]

That's perfect, thanks! I don't think there's much I can do about the rendering engine, so a javascript profiler is just what I need.