On Fri, 10 Sep 2021 12:27:47 -0700
Atish Patra <atish.patra@xxxxxxx> wrote:
Hello Atish,
> Perf stat:
> =========
>
> [root@fedora-riscv riscv]# perf stat -e r8000000000000005 -e
> r8000000000000007 -e r8000000000000006 -e r0000000000020002 -e
> r0000000000020004 -e branch-misses -e cache-misses -e
> dTLB-load-misses -e dTLB-store-misses -e iTLB-load-misses -e cycles
> -e instructions ./hackbench -pipe 15 process Running with 15*40 (==
> 600) tasks. Time: 6.578
>
> Performance counter stats for './hackbench -pipe 15 process':
>
> 6,491 r8000000000000005 (52.59%) -->
> SBI_PMU_FW_SET_TIMER 20,433 r8000000000000007 (60.74%) -->
> SBI_PMU_FW_IPI_RECVD 21,271 r8000000000000006 (68.71%) -->
> SBI_PMU_FW_IPI_SENT 0 r0000000000020002 (76.55%)
> <not counted> r0000000000020004 (0.00%)
> <not counted> branch-misses (0.00%)
> <not counted> cache-misses (0.00%)
> 57,537,853 dTLB-load-misses (9.49%)
> 2,821,147 dTLB-store-misses (18.64%)
> 52,928,130 iTLB-load-misses (27.53%)
> 89,521,791,110 cycles (36.08%)
> 90,678,132,464 instructions # 1.01 insn per cycle
> (44.44%)
>
> 6.975908032 seconds time elapsed
>
> 3.130950000 seconds user
> 24.353310000 seconds sys
>
Tested your patch series with qemu and got results as expected:
perf stat -e r8000000000000005 -e r8000000000000007 \
-e r8000000000000006 -e r0000000000020002 -e r0000000000020004 -e
branch-misses \ -e cache-misses -e dTLB-load-misses -e
dTLB-store-misses -e iTLB-load-misses \ -e cycles -e instructions
./hackbench -pipe 15 process
Running with 15*40 (== 600) tasks.nch -pipe 15 process
Time: 20.027
Performance counter stats for './hackbench -pipe 15 process':
4896 r8000000000000005
(53.34%) 0 r8000000000000007
(61.20%) 0
r8000000000000006
(68.88%) 0 r0000000000020002
(76.53%) <not counted>
r0000000000020004
(0.00%) <not counted> branch-misses
(0.00%) <not counted>
cache-misses
(0.00%) 48414917 dTLB-load-misses
(9.87%) 2427413
dTLB-store-misses
(19.43%) 46958092 iTLB-load-misses
(28.58%) 69245163600
cycles
(37.09%) 70334279943 instructions #
1.02 insn per cycle (45.24%)
20.895871900 seconds time elapsed
2.724942000 seconds user
18.126277000 seconds sys
perf top/record also works.
Tested-by: Nikita Shubin <n.shubin@xxxxxxxxx>
Yours,
Nikita Shubin
