Bug 86994 – Add performance tests for textarea

• Component: Tools / Tests
• Status: RESOLVED FIXED

[Kent Tamura]

Add some performance tests to prepare to fix Bug 86813 and http://code.google.com/p/chromium/issues/detail?id=109587

[Kent Tamura]

Oh, "webkit-patch upload" doesn't work for the original bug tittle :-P

[Kent Tamura]

Created attachment 142981 [details]
Patch

[Kent Tamura]

(In reply to comment #2)
> Created an attachment (id=142981) [details]
> Patch

On my machine, these tests take the following time:

RESULT DOM: textarea-dom= 1249.8 ms
median= 1249.0 ms, stdev= 2.85657137142 ms, min= 1245.0 ms, max= 1257.0 ms

RESULT DOM: textarea-edit= 1691.15 ms
median= 1693.5 ms, stdev= 10.7576716812 ms, min= 1669.0 ms, max= 1707.0 ms

RESULT Parser: textarea-parsing= 880.95 ms
median= 877.0 ms, stdev= 29.0714206739 ms, min= 842.0 ms, max= 959.0 ms

Are they too long? or too short?

[Ryosuke Niwa]

(In reply to comment #3)
> RESULT DOM: textarea-dom= 1249.8 ms
> median= 1249.0 ms, stdev= 2.85657137142 ms, min= 1245.0 ms, max= 1257.0 ms
> 
> RESULT DOM: textarea-edit= 1691.15 ms
> median= 1693.5 ms, stdev= 10.7576716812 ms, min= 1669.0 ms, max= 1707.0 ms
> 
> RESULT Parser: textarea-parsing= 880.95 ms
> median= 877.0 ms, stdev= 29.0714206739 ms, min= 842.0 ms, max= 959.0 ms
> 
> Are they too long? or too short?

You can use runPerSecond to avoid making the test too slow or too fast. It'll automatically adjust the number of function calls to measure runs/s accurately.

[Eric Seidel (no email)]

Comment on attachment 142981 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=142981&action=review

> PerformanceTests/DOM/textarea-dom.html:19
> +        container.appendChild(document.createTextNode('A quick brown fox jumps over the lazy dog.\n'));
> +        container.appendChild(document.createTextNode('A quick brown fox jumps over the lazy dog.\n'));
> +        container.appendChild(document.createComment(' comment '));

Are you trying to test comment creation/textNode creation?  Do you want to pre-allocate those in an Array up front?

[Kent Tamura]

Created attachment 143149 [details]
Patch 2

[Kent Tamura]

(In reply to comment #4)
> > Are they too long? or too short?
> 
> You can use runPerSecond to avoid making the test too slow or too fast. It'll automatically adjust the number of function calls to measure runs/s accurately.

Thanks.  The new patch switched to runPerSecond.

(In reply to comment #5)
> (From update of attachment 142981 [details])
> View in context: https://bugs.webkit.org/attachment.cgi?id=142981&action=review
> 
> > PerformanceTests/DOM/textarea-dom.html:19
> > +        container.appendChild(document.createTextNode('A quick brown fox jumps over the lazy dog.\n'));
> > +        container.appendChild(document.createTextNode('A quick brown fox jumps over the lazy dog.\n'));
> > +        container.appendChild(document.createComment(' comment '));
> 
> Are you trying to test comment creation/textNode creation?  Do you want to pre-allocate those in an Array up front?

Good point.  I changed the test so that it uses pre-allocated nodes.

[Ryosuke Niwa]

Comment on attachment 143149 [details]
Patch 2

View in context: https://bugs.webkit.org/attachment.cgi?id=143149&action=review

> PerformanceTests/DOM/textarea-dom.html:16
> +var ChildCount = 1000;

Use camelCase instead?

> PerformanceTests/Parser/textarea-parsing.html:18
> +    htmlText += "A quick brown fox jumps over the lazy dog.\n" +
> +        "A quick brown fox jumps over the lazy dog.\n" +
> +        "<!-- comment -->\n";

+ should appear at the beginning of the next line.

[Kent Tamura]

Comment on attachment 143149 [details]
Patch 2

View in context: https://bugs.webkit.org/attachment.cgi?id=143149&action=review

>> PerformanceTests/Parser/textarea-parsing.html:18
>> +        "<!-- comment -->\n";
> 
> + should appear at the beginning of the next line.

Putting '+' at the end of lines is a good practice to avoid implicit semicolons.

http://google-styleguide.googlecode.com/svn/trunk/javascriptguide.xml?showone=Code_formatting#Code_formatting

[Ryosuke Niwa]

Comment on attachment 143149 [details]
Patch 2

View in context: https://bugs.webkit.org/attachment.cgi?id=143149&action=review

>>> PerformanceTests/Parser/textarea-parsing.html:18
>>> +        "<!-- comment -->\n";
>> 
>> + should appear at the beginning of the next line.
> 
> Putting '+' at the end of lines is a good practice to avoid implicit semicolons.
> 
> http://google-styleguide.googlecode.com/svn/trunk/javascriptguide.xml?showone=Code_formatting#Code_formatting

I was thinking of http://www.webkit.org/coding/coding-style.html#indentation-wrap-bool-op but I guess they only apply to boolean operators?

[Kent Tamura]

Committed r117862: <http://trac.webkit.org/changeset/117862>

[Kent Tamura]

(In reply to comment #10)
> > Putting '+' at the end of lines is a good practice to avoid implicit semicolons.
> > 
> > http://google-styleguide.googlecode.com/svn/trunk/javascriptguide.xml?showone=Code_formatting#Code_formatting
> 
> I was thinking of http://www.webkit.org/coding/coding-style.html#indentation-wrap-bool-op but I guess they only apply to boolean operators?

I think we're following this rule for any operators in C++. But JavaScript needs a special treatment at this point.