324944 - Cairo (via SVG) on Mac painfully slow

Status: RESOLVED WONTFIX

(Core Graveyard :: GFX: Mac, defect)

Description

[Simon Fraser [no longer active]]

Google just put up some graphs using SVG, and one of those pages is painfully slow to render. It locks up Camino for tens of seconds while trying to resize the window.

Comment 1

[Simon Fraser [no longer active]]

Attachment: Stack trace grabbed from ThreadViewer

This shows a stack where Camino was spending time while being unresponsive.

Comment 2

[Jo Hermans]

I don't see where bzero is called in _cairo_surface_composite_shape_fixup_unbounded() or in any of the functions that are called inside ?

An easy optimization here would be to move the src_attr->extend comparison to the front of the if-statement, and also in _cairo_surface_composite_fixup_unbounded(). And _cairo_matrix_is_integer_translation() can also be made a little faster (move the first 4 parts of the big is_integer_translation-statement before the calls to  _cairo_fixed_from_double(). Which was promised an easy optimization in http://lists.freedesktop.org/archives/cairo/2005-October/005423.html ...

Comment 3

[Jo Hermans]

Attachment: sample from Firefox

Here's a sampling (taken using sample), from Firefox 1.5.0.1
Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8) Gecko/20060131 Firefox/1.5

This is on a very slow 300 MHz laptop, using Mac OS X 10.2.8. This particular page takes 19 seconds to display !

Comment 4

[Simon Fraser [no longer active]]

Another reason that Cairo needs to be lightning-fast:

http://ajaxsketch.com/

Comment 5

[Boris Zbarsky [:bzbarsky]]

Not

Comment 6

[Simon Fraser [no longer active]]

Isn't bug 324944 a dup of this?

Comment 7

[Håkan Waara]

(In reply to comment #6)
> Isn't bug 324944 a dup of this?

This *is* 324944. ;)

Comment 8

[Simon Fraser [no longer active]]

Sorry, I meant bug 334721.

Comment 9

[jonathan chetwynd]

http://www.peepo.co.uk

Opera and ASV load quicker and are significantly more responsive for instance to onmouseover.

Mac is slower than PC and camino is slower still see: https://bugzilla.mozilla.org/show_bug.cgi?id=328051

Comment 10

[Chris Lawson (gone)]

*** Bug 328051 has been marked as a duplicate of this bug. ***

Comment 11

[Gordon P. Hemsley [:GPHemsley]]

This bug has been buried in the graveyard and has not been updated in over 5 years. It is probably safe to assume that it will never be fixed, so resolving as WONTFIX.

[Mass-change filter: graveyard-wontfix-2014-09-24]