Re: [patch] x86/vsyscall: Add Kconfig option to use native vsyscalls, switch to it

2012-11-20 Thread David Rientjes
On Tue, 20 Nov 2012, Ingo Molnar wrote: > Subject: x86/vsyscall: Add Kconfig option to use native vsyscalls, switch to > it > From: Ingo Molnar > > Apparently there's still plenty of systems out there triggering > the vsyscall emulation page faults - causing hard to track down > performance reg

Re: [patch] x86/vsyscall: Add Kconfig option to use native vsyscalls, switch to it

2012-11-20 Thread Andy Lutomirski
On Tue, Nov 20, 2012 at 1:41 AM, Ingo Molnar wrote: > > * Ingo Molnar wrote: > >> > 0.10% [kernel] [k] __do_page_fault >> > 0.08% [kernel] [k] handle_mm_fault >> > 0.08% libjvm.so [.] os::javaTimeMillis() >> > 0.08% [kernel] [k] emulate_v