I am having I/O performance issues with Cygwin perl. For example (where
"c/Perl/bin/perl" is the activestate version):
-------------------------------------
[EMAIL PROTECTED] ~/lcra/models/opt$ perl -v
This is perl, v5.8.7 built for cygwin-thread-multi-64int
(with 1 registered patch, see perl -V for more detail)
[EMAIL PROTECTED] ~/lcra/models/opt$ /cygdrive/c/Perl/bin/perl -v
This is perl, v5.8.8 built for MSWin32-x86-multi-thread
(with 25 registered patches, see perl -V for more detail)
[EMAIL PROTECTED] ~/lcra/models/opt
$ time perl test.pl
real 0m9.266s
user 0m8.780s
sys 0m0.109s
[EMAIL PROTECTED] ~/lcra/models/opt
$ time /cygdrive/c/Perl/bin/perl test.pl
real 0m2.266s
user 0m0.015s
sys 0m0.000s
[EMAIL PROTECTED] ~/lcra/models/opt
$ cat test.pl
#!/bin/perl
open(OUTFIL,">test.out");
foreach $i (1..50000) {
foreach $j (1..10) {
$ary[$j-1] = rand 1;
}
printf OUTFIL (("%15.7e"x10)."\n",@ary);
}
close(OUTFIL);
[EMAIL PROTECTED] ~/lcra/models/opt$
------------------------------------
The test.pl code looks a little weird because I was doing a line by line
comparison to a Fortran code (which runs in <1 sec, btw).
Anyone have an idea as to why Perl runs this code so much slower under
Cygwin?
Cheers,
Ed.
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