Re: [PATCH, v2] mm, numa: Turn 4K pte NUMA faults into effective hugepage ones
From: Ingo Molnar <mingo@kernel.org>
Date: 2012-11-21 09:34:39
Also in:
lkml
From: Ingo Molnar <mingo@kernel.org>
Date: 2012-11-21 09:34:39
Also in:
lkml
* David Rientjes [off-list ref] 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_funcfor 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@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>