Messages in this thread Patch in this message | | | From | Huacai Chen <> | Subject | [PATCH] LoongArch: Select THP_SWAP if HAVE_ARCH_TRANSPARENT_HUGEPAGE | Date | Wed, 10 Apr 2024 21:12:56 +0800 |
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THP_SWAP has been proven to improve the swap throughput significantly on x86_64 system according to commit bd4c82c22c367e0 ("mm, THP, swap: delay splitting THP after swapped out"), on ARM64 system according to commit d0637c505f8a1d ("arm64: enable THP_SWAP for arm64") and on RISC-V system according to commit 87f81e66e2e84c7 ("riscv: enable THP_SWAP for RV64").
Enable THP_SWAP for LoongArch, testing the micro-benchmark which is introduced by commit d0637c505f8a1d ("arm64: enable THP_SWAP for arm64") shows below numbers on the Loongson-3A5000 board:
swp out bandwidth w/o patch: 1815716 bytes/ms (mean of 10 tests) swp out bandwidth w/ patch: 3410003 bytes/ms (mean of 10 tests)
Improved by 46.75%!
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> --- arch/loongarch/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index d52a95195e7f..41ddc39e1fc8 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -69,6 +69,7 @@ config LOONGARCH select ARCH_WANT_LD_ORPHAN_WARN select ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP select ARCH_WANTS_NO_INSTR + select ARCH_WANTS_THP_SWAP if HAVE_ARCH_TRANSPARENT_HUGEPAGE select BUILDTIME_TABLE_SORT select COMMON_CLK select CPU_PM -- 2.43.0
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