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| author | Peter Fors <peter.fors@mindkiller.com> | 2025-11-14 22:17:03 +0100 |
|---|---|---|
| committer | Peter Fors <peter.fors@mindkiller.com> | 2025-11-14 22:17:03 +0100 |
| commit | 2174b3f369e59286ccd10348117a16e08c412508 (patch) | |
| tree | 8ff6c7d02da221aad45fcdb03b22f09080a9c9aa /mknes_bench.c | |
| parent | 46d0f6aeb1588b85852487e581a8b4c9c2401646 (diff) | |
Rearranged the ppu_state to be even more cacheline aware, gained another 1% performance
Diffstat (limited to 'mknes_bench.c')
| -rw-r--r-- | mknes_bench.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mknes_bench.c b/mknes_bench.c index b064266..e7d53fa 100644 --- a/mknes_bench.c +++ b/mknes_bench.c @@ -333,17 +333,17 @@ static void run_benchmark(struct nes_state *nstate, uint32_t num_runs, uint32_t // Calculate per-frame statistics using static storage double *cycles_per_frame = &per_frame_storage[0]; - double *insn_per_frame = &per_frame_storage[num_runs]; + double *ipc_per_run = &per_frame_storage[num_runs]; double *time_ms = &per_frame_storage[num_runs * 2]; for(uint32_t i = 0; i < num_runs; i++) { cycles_per_frame[i] = (double)runs[i].cycles / frames_per_run; - insn_per_frame[i] = (double)runs[i].instructions / frames_per_run; + ipc_per_run[i] = (double)runs[i].instructions / (double)runs[i].cycles; time_ms[i] = (double)runs[i].time_ns / 1000000.0; } struct bench_stats cycles_stats = calculate_stats(cycles_per_frame, num_runs); - struct bench_stats insn_stats = calculate_stats(insn_per_frame, num_runs); + struct bench_stats ipc_stats = calculate_stats(ipc_per_run, num_runs); struct bench_stats time_stats = calculate_stats(time_ms, num_runs); // Print results @@ -368,7 +368,7 @@ static void run_benchmark(struct nes_state *nstate, uint32_t num_runs, uint32_t printf("Throughput: %.2f MIPS, %.2f Mcycles/sec\n", mips, mcps); printf("\n"); printf("cycles/frame mean=%9.0f sd=%6.0f relSD=%.3f%% n=%d\n", cycles_stats.mean, cycles_stats.sd, cycles_stats.rel_sd, cycles_stats.n); - printf("insn/frame mean=%9.0f sd=%6.0f relSD=%.3f%% n=%d\n", insn_stats.mean, insn_stats.sd, insn_stats.rel_sd, insn_stats.n); + printf("IPC mean=%9.3f sd=%6.3f relSD=%.3f%% n=%d\n", ipc_stats.mean, ipc_stats.sd, ipc_stats.rel_sd, ipc_stats.n); printf("time (ms) mean=%9.3f sd=%6.3f relSD=%.3f%% n=%d\n", time_stats.mean, time_stats.sd, time_stats.rel_sd, time_stats.n); double fps = (double)frames_per_run / (time_stats.mean / 1000.0); |