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author | Jisheng Zhang <jszhang@kernel.org> | 2022-08-29 22:57:42 +0800 |
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committer | Palmer Dabbelt <palmer@rivosinc.com> | 2022-10-06 20:03:48 -0700 |
commit | 87f81e66e2e84c7e6056413703d732a99c20c09b (patch) | |
tree | 6fad2e48300b4e4b0226520783c53036591d02ff /drivers/perf | |
parent | 61a41d16ad20657f93613229a8b17766c51dc849 (diff) | |
download | linux-87f81e66e2e84c7e6056413703d732a99c20c09b.tar.gz |
riscv: enable THP_SWAP for RV64
I have a Sipeed Lichee RV dock board which only has 512MB DDR, so memory optimizations such as swap on zram are helpful. As is seen in commit d0637c505f8a ("arm64: enable THP_SWAP for arm64") and commit bd4c82c22c367e ("mm, THP, swap: delay splitting THP after swapped out"), THP_SWAP can improve the swap throughput significantly. Enable THP_SWAP for RV64, testing the micro-benchmark which is introduced by commit d0637c505f8a ("arm64: enable THP_SWAP for arm64") shows below numbers on the Lichee RV dock board: swp out bandwidth w/o patch: 66908 bytes/ms (mean of 10 tests) swp out bandwidth w/ patch: 322638 bytes/ms (mean of 10 tests) Improved by 382%! Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20220829145742.3139-1-jszhang@kernel.org/ Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'drivers/perf')
0 files changed, 0 insertions, 0 deletions