Firefox/Projects/Startup Time Improvements/Static Build

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A static build nets us a ~15% startup performance win on the Mac. A static build breaks XPCOM components, though, so a solution needs to be provided.


  • bug 525013 - investigate a more static build configuration of Firefox


There are no issues on Mac or Linux but Windows seems to build a dependency on firefox.exe into the components (see bug 532765).

We definitely want to use _-mdynamic-no-pic_ on the Mac. At one point in time this resulted in a 50% startup boost when running from an external USB HD. The next day we were down to a more reasonable 15%.

Areas of work

Results definitely need to be verified on all platforms. Need to fix our cold startup harness on the Mac to fully clear the OS caches (bug 532965).