Hi.

I have an application that splitting a large data file into smaller files with a few records each and then saving the files to disk.

For the most part it works well, but in once instance, I am parsing an file with 5000+ records into smaller files of 12 each. It is taking about 20 seconds to save all the 400+ files. My development machine isa little slow, so it will get faster in production, but still I want it to be as fast as possible.

I'm using the basic 

foreach my $file (@file) {
  my $filename = $file->{'filename'};
  my $content = $file->{'content'};
  open(FILE, ">$filename") 
    or die "Can't open $filename $!";
  print FILE $content;
  close(FILE);    
}

[download]


My question is, is there some magical module out there, defying my undertanding of how the OS works, to save a bunch of files with only one I/O call? To store them all in memory until they are all ready to be written, and then do it at once, with one open/print/close call?

If not, is there *anything* at all I could do make it faster aside from putting more than 12 records in each file?

In reply to Quickest way to write multiple files by Anonymous Monk

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