file read performance
Hi Gambit List, What's the quickest way of reading a file from disk into memory? I tried 'read-all' with 'read-line', but unfortunately even with compiling I get an order of magnitude worse performance than doing the same in python. I'm using the following code, compiled using gsc and gcc -O3, and I get 500ms to read the 'bib' file supplied in the bench.tgz package. ---------------------- (define (f) (call-with-input-file "bib" (lambda (p) (read-all p read-line)))) (time (f)) ------------------------ In python, the same takes about 50ms e.g. for line in file("bib").readlines(): # do something Is there anything I can do to speed this up? (I've tried setting #define ___MAX_CHR 0xff ) Many thanks, Phil
Afficher les réponses par date
participants (1)
-
Phil Dawes