Welcome to the CHICKEN Scheme pasting service

;; * bench.scm is the benchmark program from
;;   https://stackoverflow.com/questions/62826083/chicken-scheme-read-line-taking-too-long
;;
;; * csc is CHICKEN 5.2.0
;;
;; * ~/local/chicken-megane is master as of 1707357f942 plus
;;   megane's patches (https://lists.nongnu.org/archive/html/chicken-hackers/2020-01/msg00002.html)
;;
;; * the input file (largeish_file.txt) is a copy of csi.c


;; 5.2.0

$ csc bench.scm && ./bench
53.821s CPU time, 27.692s GC time (major), 56694/313 mutations (total/tracked), 13110/39984 GCs (major/minor), maximum live heap: 4.33 MiB
0.043s CPU time, 0.01s GC time (major), 56700/330 mutations (total/tracked), 4/432 GCs (major/minor), maximum live heap: 3.18 MiB

$ csc bench.scm && ./bench -:s8000k
20.764s CPU time, 7.528s GC time (major), 56694/37 mutations (total/tracked), 3198/3597 GCs (major/minor), maximum live heap: 4.3 MiB
0.05s CPU time, 0.001s GC time (major), 56700/46 mutations (total/tracked), 1/54 GCs (major/minor), maximum live heap: 1.22 MiB


;; master + megane's patches

$ ~/local/chicken-megane/bin/csc bench.scm && ./bench
33.629s CPU time, 6.828s GC time (major), 56694/319 mutations (total/tracked), 3002/50092 GCs (major/minor), maximum live heap: 4.29 MiB
0.03s CPU time, 56700/330 mutations (total/tracked), 0/436 GCs (major/minor), maximum live heap: 247.02 KiB

$ ~/local/chicken-megane/bin/csc bench.scm && ./bench -:s8000k
16.859s CPU time, 3.147s GC time (major), 56694/35 mutations (total/tracked), 1258/5537 GCs (major/minor), maximum live heap: 4.3 MiB
0.047s CPU time, 56700/46 mutations (total/tracked), 0/55 GCs (major/minor), maximum live heap: 247.05 KiB