109
edits
Firefox/Projects/Startup Time Improvements/joelr notes: Difference between revisions
Jump to navigation
Jump to search
Firefox/Projects/Startup Time Improvements/joelr notes (view source)
Revision as of 13:06, 23 September 2009
, 23 September 2009no edit summary
Joel Reymont (talk | contribs) mNo edit summary |
Joel Reymont (talk | contribs) No edit summary |
||
| Line 4: | Line 4: | ||
= Current status = | = Current status = | ||
=== September 23, 2009 === | |||
==== A shiny new world ==== | |||
Damon thinks I should help Josh with the 64-bit port. 64-bit Trace Monkey gives us a [http://www.bailopan.net/blog/?p=595 20% improvement in speed] which beats the 5% DWARF improvement from -fomit-frame-pointer. I didn't know it was my birthday! | |||
I'm leaving the 32-bit world behind. 64 bits here I come! | |||
= Previous statuses = | |||
=== September 22, 2009 === | |||
I have two bottlenecks on my plate, [https://bugzilla.mozilla.org/show_bug.cgi?id=517045 Bug 517045] and [https://bugzilla.mozilla.org/show_bug.cgi?id=517576 Bug 517576]. Both of them may not be possible to speed up significantly, not without a large research effort. The former requires consultation with the owners and the later requires me to become a layout expert. | |||
Benjamin Smedberg suggested taking care of DWARF symbols in breakpad as that will let us use the -fomit-frame-pointer gcc option. Omitting the frame pointer would result in at least a 5% overall speed up because a register will be freed on x86-32. | |||
DWARF is a [https://bugzilla.mozilla.org/showdependencygraph.cgi?id=464750 tree of dependent bugs], though, and Jim Blandy is working on them. Jim is a Linux guy, though, and also has ECMAScript 5 strict mode to take care of whereas I'm strictly focused on performance optimization. | |||
I'll ask management to see if I can work on DWARF with Jim. | |||
=== September 21, 2009 === | === September 21, 2009 === | ||
| Line 12: | Line 32: | ||
One other thing I'm wondering about... What if all the bottlenecks I find will get fixed by someone else? Damon wants me to write code!!! | One other thing I'm wondering about... What if all the bottlenecks I find will get fixed by someone else? Damon wants me to write code!!! | ||
=== September 16, 2009 === | === September 16, 2009 === | ||