YJIT Benchmarks

Details for Benchmarks at 2022-03-30 07:15:25

Overall YJIT is 32.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 27.3% 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 5 183 75 183 20 183
hexapdf 5 15 20 15
liquid-render 5 158 75 158 20 158
mail 5 123 75 123 20 123
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 65 75 65 20 65
chunky_png 5 30 75 30 20 30
discourse 5 37 75 37 20 37
erubi 5 47 75 47 20 47
erubi_rails 5 984 75 984 20 984
fannkuchredux 5 15 74 15 20 15
lee 5 22 75 22 20 22
nbody 5 282 75 282 20 282
optcarrot 5 15 75 15 20 15
rubykon 5 15 23 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 448 75 448 20 448
fib 5 320 75 320 20 320
getivar 5 775 75 775 20 775
keyword_args 5 376 75 376 20 376
respond_to 5 102 75 102 20 102
setivar 5 1790 75 1790 20 1790

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) 986769 755826 185 1199 0 0% 0 0 0
hexapdf (click) 1114257 912913 599 8160 613 7% 0 0 320
liquid-render (click) 488017 387475 143 1504 95 6% 0 0 1
mail (click) 842513 634302 324 4983 125 2% 0 0 39
psych-load (click) 331217 261768 59 434 1 0% 0 0 0
railsbench (click) 2538193 1934303 1297 9377 268 2% 0 0 26
binarytrees (click) 152785 117243 11 59 0 0% 0 0 0
chunky_png (click) 365713 285405 85 857 0 0% 0 0 0
discourse (click) 23598097 11758113 3134 299739 276206 92% 2 0 133
erubi (click) 322129 255098 10 79 0 0% 0 0 0
erubi_rails (click) 1907473 1436632 262 1890 18 0% 0 0 3
fannkuchredux (click) 167057 128270 8 189 0 0% 0 0 0
lee (click) 373649 294528 45 587 69 11% 0 0 12
nbody (click) 162065 124444 10 159 0 0% 0 0 0
optcarrot (click) 489681 430242 198 3576 20 0% 0 0 0
rubykon (click) 293713 237417 140 1533 2 0% 0 0 0
30k_ifelse (click) 5541841 4337567 9263 57805 0 0% 0 0 0
30k_methods (click) 2157009 1646029 5782 19362 0 0% 0 0 0
cfunc_itself (click) 151249 115872 8 50 0 0% 0 0 0
fib (click) 149841 115480 8 39 0 0% 0 0 0
getivar (click) 151249 117417 8 66 0 0% 0 0 0
keyword_args (click) 152657 116842 9 52 0 0% 0 0 0
respond_to (click) 153425 117326 8 65 0 0% 0 0 0
setivar (click) 151569 116515 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.