Re: [HEADSUP] making /bin/sh the default shell for root
Date: Thu, 23 Sep 2021 03:55:12 UTC
grarpamp <grarpamp@gmail.com> writes: > BSD community can definitely volunteer to make benchmark of > its shell vs others, determine if and where improvements to make. > Many apps never get checked for obvious speedups, > if so it might become fastest shell even with the new features. Like https://github.com/shellspec/shellbench ? I did check a month ago (on 2021-08-31) but forgot NetBSD sh(1). Obviously, the results may vary per OS/version/architecture/hardware. $ ./shellbench -s sh,dash,busybox/sh,bash,zsh,oksh,ksh93,yash sample/*.sh ---------------------------------------------------------------------------------------------------------------------- name sh dash busybox/sh bash zsh oksh ksh93 yash ---------------------------------------------------------------------------------------------------------------------- assign.sh: positional params 1,983,164 747,830 666,979 443,083 551,071 875,915 479,129 395,225 assign.sh: variable 2,405,745 827,904 741,112 616,017 1,308,457 1,013,153 588,698 510,636 assign.sh: local var 2,398,554 834,027 747,871 603,486 1,293,027 1,007,511 error 503,410 assign.sh: local var (typeset) error error error 616,483 1,306,641 1,011,383 544,136 504,782 cmp.sh: [ ] 1,628,216 567,700 465,761 352,438 336,288 713,738 518,768 297,987 cmp.sh: [[ ]] error error error 480,974 595,441 903,502 613,269 376,550 cmp.sh: case 2,527,633 1,196,339 1,024,253 606,588 632,811 959,232 628,183 450,893 count.sh: posix 1,640,683 717,178 589,330 463,934 907,140 700,233 376,361 398,937 count.sh: typeset -i error error error 452,029 907,541 652,885 385,585 error count.sh: increment error error error 581,631 1,264,962 845,738 581,111 error eval.sh: direct assign 1,670,797 564,299 518,082 308,709 198,714 722,050 285,150 279,020 eval.sh: eval assign 1,102,774 393,161 332,925 194,636 156,834 476,164 173,156 192,191 eval.sh: command subs 2,188 5,828 4,830 2,208 1,597 5,015 ? 4,302 func.sh: no func 2,451,641 836,115 756,258 614,579 711,116 1,087,770 571,210 507,644 func.sh: func 1,947,254 596,731 542,519 349,748 187,903 845,681 306,506 313,989 null.sh: blank 3,094,116 error error error 1,529,326 1,304,367 error 593,711 null.sh: assign variable 2,419,811 845,676 751,887 669,694 1,374,858 1,012,724 599,490 533,401 null.sh: define function 2,687,933 1,259,149 1,076,947 661,432 1,270,777 1,085,654 584,490 525,184 null.sh: undefined variable 2,445,429 839,334 750,904 505,147 631,862 1,048,805 473,900 501,851 null.sh: : command 2,418,617 839,744 742,385 610,307 701,972 1,064,089 565,323 500,879 output.sh: echo 1,518,368 669,539 620,417 404,729 544,030 781,488 540,064 380,174 output.sh: printf 1,481,745 632,454 535,170 395,649 534,303 1,556 258,827 365,724 output.sh: print error error error error 542,740 775,812 353,320 error subshell.sh: no subshell 2,330,179 819,359 729,753 571,353 705,892 1,005,262 560,780 485,498 subshell.sh: brace 2,343,747 833,142 728,803 554,948 568,470 984,156 557,069 413,438 subshell.sh: subshell 3,444 6,917 2,814 1,190 3,578 3,391 240,738 2,570 subshell.sh: command subs 1,871,462 3,806 5,966 2,766 2,709 4,564 146,388 3,691 subshell.sh: external command 1,112 996 579 893 2,190 2,529 1,728 1,778 ---------------------------------------------------------------------------------------------------------------------- * count: number of executions per second