YJIT Benchmarks

Details for Benchmarks at 2022-04-16 19:13:41

Overall YJIT is 31.7% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 31.5% faster than CRuby!
The basic "faster" measurement is the geomean of all "headlining" x86 benchmarks on this page.

Headlining Benchmarks

These are "headlining" because the "overall" speedup above is based on these benchmarks specifically.

Speed of each Ruby implementation (iterations/second) relative to the CRuby interpreter. Higher is better.

Other Benchmarks

Speed of each Ruby implementation (iterations/second) relative to the CRuby interpreter. Higher is better.

MicroBenchmarks

Speed of each Ruby implementation (iterations/second) relative to the CRuby interpreter. Higher is better.

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Benchmarks Speed Details

Benchmark Memory Usage Details

Number of Iterations and Warmups Tested

bench No JIT warmups No JIT iters MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 180 75 180 20 180
hexapdf 5 15 20 15
liquid-render 5 154 75 154 20 154
mail 5 124 75 124 20 124
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 61 75 61 20 61
chunky_png 5 30 75 30 20 30
discourse 5 39 75 39 20 39
erubi 5 47 75 47 20 47
erubi_rails 5 976 75 976 20 976
fannkuchredux 5 15 73 15 20 15
lee 5 22 75 22 20 22
nbody 5 274 75 274 20 274
optcarrot 5 15 75 15 20 15
rubykon 5 15 28 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 442 75 442 20 442
fib 5 319 75 319 20 319
getivar 5 784 75 784 20 784
keyword_args 5 376 75 376 20 376
respond_to 5 111 75 111 20 111
setivar 5 1912 75 1912 20 1912

Different Ruby configurations want different amounts of warmup. With no JIT, CRuby needs hardly any. YJIT and MJIT 3.0 both warm up quite quickly, while MJIT in 3.1 often slows down for a time as it compiles, after an unpredictable delay.

Benchmark YJIT Stats

Hover your cursor over the benchmark names for descriptions of each benchmark.

bench Exit Report Inline Outlined Comp iSeqs Comp Blocks Inval Inval Ratio Bind Alloc Bind Set Const Bumps
activerecord (click) 993681 814775 185 1191 0 0% 0 0 0
hexapdf (click) 1098641 921924 600 7889 427 5% 0 0 321
liquid-render (click) 501777 423536 143 1507 92 6% 0 0 5
mail (click) 893265 690087 324 5443 96 1% 0 0 111
psych-load (click) 341841 286772 59 434 1 0% 0 0 0
railsbench (click) 2599633 2104995 1297 9384 224 2% 0 0 26
binarytrees (click) 170193 139155 11 58 0 0% 0 0 0
chunky_png (click) 376401 309501 85 869 0 0% 0 0 0
discourse (click) 6184849 5560511 3089 26384 3119 11% 2 0 140
erubi (click) 328529 276068 10 79 0 0% 0 0 0
erubi_rails (click) 1958545 1598156 262 1895 12 0% 0 0 3
fannkuchredux (click) 183953 149853 8 188 0 0% 0 0 0
lee (click) 378513 315736 45 582 68 11% 0 0 13
nbody (click) 178769 145605 10 159 0 0% 0 0 0
optcarrot (click) 504721 450532 198 3576 20 0% 0 0 0
rubykon (click) 309329 258272 140 1531 1 0% 0 0 0
30k_ifelse (click) 5557777 4358354 9263 57805 0 0% 0 0 0
30k_methods (click) 2173905 1667612 5782 19361 0 0% 0 0 0
cfunc_itself (click) 167185 136659 8 50 0 0% 0 0 0
fib (click) 165457 136360 8 38 0 0% 0 0 0
getivar (click) 167185 138871 8 65 0 0% 0 0 0
keyword_args (click) 167761 137393 9 51 0 0% 0 0 0
respond_to (click) 170321 138909 8 64 0 0% 0 0 0
setivar (click) 168273 137676 8 39 0 0% 0 0 0

YJIT stats correspond to the YJIT stats exit report.

Note: currently, all stats are collected on x86_64, not ARM.

Raw JSON data files

All graphs and table data in this page comes from processing these data files, which come from benchmark runs.