Fast format (was Re: What can I do to help?)

[Daniel Skarda]

Hello,

  I think Guile does not have fast formated output (see simple benchmark).

  `simple-format' now implements only basic `format' subset. I think that fast
format could be critical for some type of applications, but simple-format does
not even implement simple number (or string) formating.

0.

;--- simple (simple-)format benchmarks: -------------------------------

(use-modules (ice-9 format))

guile> (define p (open-output-file  "/dev/null"))

guile> (time (do-ntimes (n 100000) (simple-format p "~s" 3.14159265358979)))
Elapsed time: 1.875558 sec
  Real  1.88 sec
  User  1.88 sec
  Sys   0.0 sec
  Gc    0.62 sec

Garbage Collector:
  #exec                 16
  Time                  0.62 sec

guile> (time (do-ntimes  (n 100000) (format p "~s" 3.14159265358979)))       
Elapsed time: 21.257521 sec
  Real  21.26 sec
  User  21.25 sec
  Sys   0.01 sec
  Gc    9.44 sec

Garbage Collector:
  #exec                 244
  Time                  9.44 sec