* David Rientjes <rientjes@xxxxxxxxxx> wrote: > Ok, this is significantly better, it almost cut the regression > in half on my system. [...] The other half still seems to be related to the emulation faults that I fixed in the other patch: > 0.49% [kernel] [k] page_fault > 0.06% [kernel] [k] emulate_vsyscall Plus TLB flush costs: > 0.13% [kernel] [k] generic_smp_call_function_interrupt > 0.08% [kernel] [k] flush_tlb_func for which you should try the third patch I sent. So please try all my fixes - the easiest way to do that would be to try the latest tip:master that has all related fixes integrated and send me a new perf top output - most page fault and TLB flush overhead should be gone from the profile. Thanks, Ingo -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>