In mozilla there are a lot of page faults caused by paging in C++ global
initializers. About 1/3rd of firefox faults are globals.
ie the first part of a prelinked firefox startup is a bunch of faults caused by
_GLOBAL__I_nsFtpConnectionThread.cpp, _GLOBAL__I_nsCookieService.cpp, etc.
If these were grouped together large C++ apps would load much faster. Once the
initializers are easily identifiable by the linker, the linker needs to lay
these out in a continuous chunk in the ordered that they are called.
--
Summary: Output initializers in .text.init section
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: tglek at mozilla dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44236
