Interpreted libriscv vs. LuaJIT

libriscv_vs_luajit.txt

$ ./bench 
* All benchmark results are measured in 200x1200 samples
              benchmark overhead	median 0ns  		lowest: 0ns     	highest: 0ns
Self-test running ELF entry at 0x1021C
Calling into event loop...!
event_loop: Checking for work
event_loop: Going to sleep!
add_work: Adding work
Resuming event loop...!
event_loop: Checking for work
work: Doing some work!
event_loop: Going to sleep!
event_loop: Checking for work
event_loop: Going to sleep!
add_work: Adding work
event_loop: Checking for work
work: Doing some work!
event_loop: Going to sleep!
RISC-V self-test OK
                  libriscv: mips	instr 1600025000, time 1.311113, 1220.356342 mip/s
         libriscv: call overhead	median 4ns  		lowest: 4ns     	highest: 5ns
      libriscv: preempt overhead	median 14ns  		lowest: 14ns     	highest: 18ns
                  libriscv: fork	median 209ns  		lowest: 206ns     	highest: 230ns
      libriscv: resume execution	median 3ns  		lowest: 3ns     	highest: 5ns
           luajit: call overhead	median 130ns  		lowest: 128ns     	highest: 183ns

After this point, call overhead is subtracted from every benchmark result for both libriscv and Lua

          libriscv: array append	median 4ns  		lowest: 3ns     	highest: 5ns
         libriscv: vector append	median 10ns  		lowest: 8ns     	highest: 11ns
            luajit: table append	median 29ns  		lowest: 17ns     	highest: 46ns

          libriscv: 8x arguments	median 46ns  		lowest: 43ns     	highest: 49ns
        libriscv: 8x stored args	median 36ns  		lowest: 35ns     	highest: 45ns
      libriscv: 8x prepared args	median 44ns  		lowest: 43ns     	highest: 60ns
            luajit: 8x arguments	median 330ns  		lowest: 320ns     	highest: 373ns

          libriscv: integer math	median 3ns  		lowest: 3ns     	highest: 4ns
               libriscv: fp math	median 9ns  		lowest: 9ns     	highest: 12ns
              libriscv: exp math	median 14ns  		lowest: 13ns     	highest: 21ns
               libriscv: fib(40)	median 172ns  		lowest: 163ns     	highest: 216ns
            libriscv: taylor(1K)	median 5866ns  		lowest: 5262ns     	highest: 6012ns
            luajit: integer math	median 49ns  		lowest: 47ns     	highest: 149ns
                 luajit: fp math	median 64ns  		lowest: 59ns     	highest: 244ns
                luajit: exp math	median 63ns  		lowest: 60ns     	highest: 85ns
                 luajit: fib(40)	median 59ns  		lowest: 57ns     	highest: 179ns
              luajit: taylor(1K)	median 863ns  		lowest: 838ns     	highest: 1003ns

      libriscv: syscall overhead	median 1ns  		lowest: 1ns     	highest: 4ns
        libriscv: syscall string	median 7ns  		lowest: 6ns     	highest: 15ns
        luajit: syscall overhead	median 12ns  		lowest: 11ns     	highest: 136ns
          luajit: syscall string	median 32ns  		lowest: 30ns     	highest: 70ns

       libriscv: complex syscall	median 60ns  		lowest: 56ns     	highest: 65ns
         luajit: complex syscall	median 771ns  		lowest: 764ns     	highest: 788ns

         libriscv: micro threads	median 129ns  		lowest: 126ns     	highest: 147ns
              luajit: coroutines	median 166ns  		lowest: 162ns     	highest: 198ns

     libriscv: micro thread args	median 190ns  		lowest: 184ns     	highest: 201ns
      libriscv: full thread args	median 190ns  		lowest: 187ns     	highest: 199ns
          luajit: coroutine args	median 217ns  		lowest: 211ns     	highest: 240ns
          luajit: coroutine args	median 240ns  		lowest: 234ns     	highest: 256ns

          libriscv: naive memcpy	median 397ns  		lowest: 393ns     	highest: 439ns
        libriscv: syscall memcpy	median 21ns  		lowest: 19ns     	highest: 30ns
                  luajit: memcpy	median 94ns  		lowest: 88ns     	highest: 102ns
        libriscv: syscall memset	median 9ns  		lowest: 9ns     	highest: 22ns
          libriscv: naive memset	median 245ns  		lowest: 243ns     	highest: 253ns
                  luajit: memset	median 67ns  		lowest: 65ns     	highest: 81ns

            libriscv: sieve(10M)	median 156ms  		lowest: 156ms     	highest: 156ms
              luajit: sieve(10M)	median 124ms  		lowest: 124ms     	highest: 124ms