Re: [Chicken-hackers] Possible chicken performance tweak

[felix winkelmann]

On 3/6/07, Tony Sidaway <address@hidden> wrote:
> I tweaked my copy of chicken.scm to read each input file into a string
> and then compile from the string.  The time saved seems to be of the
> order 10% on my laptop system, when tested on the 2100-line
> posixunix.scm.
>
>         (let* ((f (car files))
>                  (fs (with-input-from-file f read-string)) ; NEW: read into 
> string
>                  ;;;(in (check-and-open-input-file f))
>                 (in (open-input-string fs)) ; NEW: open string file
>                 (x1 (read-form in)) )
>                  (do ((x x1 (read-form in)))
>                       ((eof-object? x)
>                        ;;;(close-checked-input-file in f)
>                        #t ; NEW: placeholder in the (do) form.
>                        )
>                     (set! forms (cons x forms)) ) )
>
> Trace information, containing filename and line number, is unaffected.
>  The change seems to be transparent.

Hm... I don't know... What about (probably machine generated) really
large files on low-memory machines? Also, is the performance improvement
really significant in this situation?


cheers,
felix