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Recursive parser: informal benchmarks
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| Recorded a few times on Linux 4.15.0-36-generic x86_64 for https://github.com/ziglang/zig/pull/2405 |
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| master | |
| COLD: | |
| Performance counter stats for 'bin/zig test ../std/zig/parser_test.zig': | |
| 2219.734444 task-clock (msec) # 0.992 CPUs utilized | |
| 163 context-switches # 0.073 K/sec | |
| 12 cpu-migrations # 0.005 K/sec | |
| 90,866 page-faults # 0.041 M/sec | |
| 7,143,126,105 cycles # 3.218 GHz (49.70%) | |
| 11,240,270,946 instructions # 1.57 insn per cycle (62.03%) | |
| 2,047,558,796 branches # 922.434 M/sec (62.12%) | |
| 32,063,599 branch-misses # 1.57% of all branches (62.40%) | |
| 3,645,931,346 L1-dcache-loads # 1642.508 M/sec (62.64%) | |
| 83,575,253 L1-dcache-load-misses # 2.29% of all L1-dcache hits (62.93%) | |
| 19,584,018 LLC-loads # 8.823 M/sec (50.31%) | |
| 3,440,678 LLC-load-misses # 17.57% of all LL-cache hits (49.90%) | |
| 2.236584332 seconds time elapsed | |
| WARM: | |
| Performance counter stats for 'bin/zig test ../std/zig/parser_test.zig': | |
| 452.536811 task-clock (msec) # 0.956 CPUs utilized | |
| 4 context-switches # 0.009 K/sec | |
| 1 cpu-migrations # 0.002 K/sec | |
| 2,008 page-faults # 0.004 M/sec | |
| 1,326,662,615 cycles # 2.932 GHz (50.44%) | |
| 2,448,882,217 instructions # 1.85 insn per cycle (62.80%) | |
| 344,589,808 branches # 761.462 M/sec (62.20%) | |
| 1,669,445 branch-misses # 0.48% of all branches (62.24%) | |
| 1,201,173,869 L1-dcache-loads # 2654.312 M/sec (62.21%) | |
| 1,928,515 L1-dcache-load-misses # 0.16% of all L1-dcache hits (62.53%) | |
| 203,233 LLC-loads # 0.449 M/sec (50.21%) | |
| 100,117 LLC-load-misses # 49.26% of all LL-cache hits (50.17%) | |
| 0.473131738 seconds time elapsed | |
| Performance counter stats for 'bin/zig test ../std/zig/parser_test.zig': | |
| 433.669574 task-clock (msec) # 0.962 CPUs utilized | |
| 3 context-switches # 0.007 K/sec | |
| 0 cpu-migrations # 0.000 K/sec | |
| 2,014 page-faults # 0.005 M/sec | |
| 1,299,449,210 cycles # 2.996 GHz (48.42%) | |
| 2,464,661,587 instructions # 1.90 insn per cycle (61.32%) | |
| 349,333,229 branches # 805.529 M/sec (63.06%) | |
| 1,735,040 branch-misses # 0.50% of all branches (63.92%) | |
| 1,219,205,504 L1-dcache-loads # 2811.370 M/sec (64.02%) | |
| 1,860,558 L1-dcache-load-misses # 0.15% of all L1-dcache hits (63.59%) | |
| 202,787 LLC-loads # 0.468 M/sec (48.97%) | |
| 69,062 LLC-load-misses # 34.06% of all LL-cache hits (48.02%) | |
| 0.450981455 seconds time elapsed | |
| Performance counter stats for 'bin/zig test ../std/zig/parser_test.zig': | |
| 453.594319 task-clock (msec) # 0.957 CPUs utilized | |
| 4 context-switches # 0.009 K/sec | |
| 0 cpu-migrations # 0.000 K/sec | |
| 2,014 page-faults # 0.004 M/sec | |
| 1,313,192,442 cycles # 2.895 GHz (49.78%) | |
| 2,462,515,528 instructions # 1.88 insn per cycle (62.52%) | |
| 344,646,946 branches # 759.813 M/sec (62.51%) | |
| 1,662,326 branch-misses # 0.48% of all branches (62.57%) | |
| 1,194,718,765 L1-dcache-loads # 2633.893 M/sec (62.91%) | |
| 1,859,221 L1-dcache-load-misses # 0.16% of all L1-dcache hits (62.57%) | |
| 192,276 LLC-loads # 0.424 M/sec (49.86%) | |
| 96,924 LLC-load-misses # 50.41% of all LL-cache hits (49.80%) | |
| 0.474173647 seconds time elapsed |
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| stage2-recursive-parser | |
| COLD: | |
| Performance counter stats for 'bin/zig test ../std/zig/parser_test.zig': | |
| 2043.868024 task-clock (msec) # 0.993 CPUs utilized | |
| 195 context-switches # 0.095 K/sec | |
| 26 cpu-migrations # 0.013 K/sec | |
| 97,058 page-faults # 0.047 M/sec | |
| 6,601,643,337 cycles # 3.230 GHz (49.41%) | |
| 9,930,424,122 instructions # 1.50 insn per cycle (62.57%) | |
| 1,840,043,890 branches # 900.275 M/sec (62.93%) | |
| 32,614,553 branch-misses # 1.77% of all branches (62.93%) | |
| 2,851,094,866 L1-dcache-loads # 1394.951 M/sec (63.02%) | |
| 81,930,149 L1-dcache-load-misses # 2.87% of all L1-dcache hits (62.93%) | |
| 19,751,769 LLC-loads # 9.664 M/sec (49.39%) | |
| 3,821,134 LLC-load-misses # 19.35% of all LL-cache hits (49.39%) | |
| 2.059172086 seconds time elapsed | |
| WARM: | |
| Performance counter stats for 'bin/zig test ../std/zig/parser_test.zig': | |
| 230.885644 task-clock (msec) # 0.919 CPUs utilized | |
| 3 context-switches # 0.013 K/sec | |
| 0 cpu-migrations # 0.000 K/sec | |
| 2,007 page-faults # 0.009 M/sec | |
| 583,097,602 cycles # 2.525 GHz (49.59%) | |
| 1,050,203,185 instructions # 1.80 insn per cycle (63.13%) | |
| 149,826,119 branches # 648.919 M/sec (62.73%) | |
| 440,715 branch-misses # 0.29% of all branches (62.96%) | |
| 433,509,491 L1-dcache-loads # 1877.594 M/sec (63.25%) | |
| 1,761,815 L1-dcache-load-misses # 0.41% of all L1-dcache hits (62.93%) | |
| 196,284 LLC-loads # 0.850 M/sec (49.40%) | |
| 87,977 LLC-load-misses # 44.82% of all LL-cache hits (49.14%) | |
| 0.251337536 seconds time elapsed | |
| Performance counter stats for 'bin/zig test ../std/zig/parser_test.zig': | |
| 214.162222 task-clock (msec) # 0.910 CPUs utilized | |
| 15 context-switches # 0.070 K/sec | |
| 2 cpu-migrations # 0.009 K/sec | |
| 2,006 page-faults # 0.009 M/sec | |
| 592,799,072 cycles # 2.768 GHz (46.38%) | |
| 1,078,647,247 instructions # 1.82 insn per cycle (59.43%) | |
| 165,122,600 branches # 771.016 M/sec (60.65%) | |
| 483,221 branch-misses # 0.29% of all branches (62.61%) | |
| 424,791,341 L1-dcache-loads # 1983.503 M/sec (65.84%) | |
| 2,038,256 L1-dcache-load-misses # 0.48% of all L1-dcache hits (65.47%) | |
| 243,603 LLC-loads # 1.137 M/sec (50.52%) | |
| 100,495 LLC-load-misses # 41.25% of all LL-cache hits (48.53%) | |
| 0.235312510 seconds time elapsed | |
| Performance counter stats for 'bin/zig test ../std/zig/parser_test.zig': | |
| 244.886534 task-clock (msec) # 0.930 CPUs utilized | |
| 18 context-switches # 0.074 K/sec | |
| 1 cpu-migrations # 0.004 K/sec | |
| 2,001 page-faults # 0.008 M/sec | |
| 595,212,664 cycles # 2.431 GHz (48.41%) | |
| 1,089,535,586 instructions # 1.83 insn per cycle (61.49%) | |
| 146,727,209 branches # 599.164 M/sec (61.92%) | |
| 394,277 branch-misses # 0.27% of all branches (62.97%) | |
| 392,531,249 L1-dcache-loads # 1602.911 M/sec (63.95%) | |
| 1,713,542 L1-dcache-load-misses # 0.44% of all L1-dcache hits (64.16%) | |
| 275,768 LLC-loads # 1.126 M/sec (50.06%) | |
| 72,926 LLC-load-misses # 26.44% of all LL-cache hits (48.54%) | |
| 0.263231938 seconds time elapsed |
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