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Firefox/Projects/Startup Time Improvements/joelr notes: Difference between revisions
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Firefox/Projects/Startup Time Improvements/joelr notes (view source)
Revision as of 21:24, 26 August 2009
, 26 August 2009→August 26, 2009
Joel Reymont (talk | contribs) |
Joel Reymont (talk | contribs) |
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All timings are in microseconds and specific to my Apple 256Gb SSD. | All timings are in microseconds and specific to my Apple 256Gb SSD. | ||
There's something else that I discovered during my snooping around with io.d. Compare the first 20 seconds of [http://gist.github.com/175843 the life of Safari] and [http://gist.github.com/175842 the life of Firefox]. | |||
Basically, all the shared libraries used by Safari are pulled in from the dynamic library shared cache. Safari uses mostly system frameworks, e.g. | |||
<pre> | |||
DYLD_PRINT_LIBRARIES_POST_LAUNCH=1 /Applications/Safari.app/Contents/MacOS/Safari | |||
dyld: loaded: /System/Library/CoreServices/RawCamera.bundle/Contents/MacOS/RawCamera | |||
dyld: loaded: /System/Library/PrivateFrameworks/Shortcut.framework/Versions/A/Shortcut | |||
dyld: loaded: /System/Library/PrivateFrameworks/HelpData.framework/Versions/A/HelpData | |||
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCSync.A.dylib | |||
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCGATS.A.dylib | |||
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libRIP.A.dylib | |||
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCGXCoreImage.A.dylib | |||
</pre> | |||
whereas Firefox uses a whole lot more custom shared libraries, e.g. | |||
<pre> | |||
DYLD_PRINT_LIBRARIES_POST_LAUNCH=1 ./Minefield.app/Contents/MacOS/firefox-bin -no-remote -foreground -P 2 | |||
dyld: loaded: /Users/joelr/Work/mozilla/startup/Minefield.app/Contents/MacOS/components/libbrowserdirprovider.dylib | |||
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ATS.framework/Versions/A/Resources/ATSHI.dylib | |||
dyld: loaded: /Users/joelr/Work/mozilla/startup/Minefield.app/Contents/MacOS/components/libbrowsercomps.dylib | |||
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCGATS.A.dylib | |||
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libRIP.A.dylib | |||
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCSync.A.dylib | |||
dyld: loaded: /System/Library/PrivateFrameworks/Shortcut.framework/Versions/A/Shortcut | |||
dyld: loaded: /System/Library/PrivateFrameworks/HelpData.framework/Versions/A/HelpData | |||
dyld: loaded: /Users/joelr/Work/mozilla/startup/./Minefield.app/Contents/MacOS/libnssdbm3.dylib | |||
dyld: loaded: /Users/joelr/Work/mozilla/startup/./Minefield.app/Contents/MacOS/libfreebl3.dylib | |||
dyld: loaded: /Users/joelr/Work/mozilla/startup/Minefield.app/Contents/MacOS/libnssckbi.dylib | |||
dyld: loaded: /System/Library/CoreServices/RawCamera.bundle/Contents/MacOS/RawCamera | |||
dyld: loaded: /Library/Internet Plug-Ins/QuickTime Plugin.plugin/Contents/MacOS/QuickTime Plugin | |||
dyld: loaded: /System/Library/QuickTime/QuickTimeComponents.component/Contents/MacOS/QuickTimeComponents | |||
dyld: loaded: /System/Library/Frameworks/AGL.framework/Versions/A/AGL | |||
dyld: loaded: /System/Library/PrivateFrameworks/CoreAUC.framework/Versions/A/CoreAUC | |||
dyld: unloaded: /Users/joelr/Work/mozilla/startup/Minefield.app/Contents/MacOS/libnssckbi.dylib | |||
</pre> | |||
What needs to be done to make Firefox use the dynamic library shared cache as aggressively as Safar? | |||
= Previous statuses = | = Previous statuses = | ||