NAME

Filesys::DiskUsage::Fast - A fast disk usage counter (du) with XS

SYNOPSIS

use Filesys::DiskUsage::Fast qw(du);


my $total = du( $dir );
my $total = du( $dir1, $dir2, ... );

A simple but fast disk usage counter implemented as XS module.

du()

Returns total byte number contained in directories specified.

  my $total = du("/usr/local");
  my $total = du("/bin", "/sbin", "/usr/bin", "/usr/sbin");

$ShowWarnings

If true, errors will be warn()ed. Default is true. Set false to suppress warnings (not found, permission denied etc).
```
  local $Filesys::DiskUsage::Fast::ShowWarnings = 0;
  du(...);
```
$SectorSize

If > 0, the specified size is used to calculate the block size. Default value is 0, returns real occupied size.
```
  local $Filesys::DiskUsage::Fast::SectorSize = 4096;
  du(...);
```

   s/iter   pp   xs
pp   1.35   -- -85%
xs  0.197 584%   --

tested on a directory contains around 11GB 3300+ files, CentOS 5 (HDD).

All symbolic links always result 0 byte. Block, FIFO and other special files may not be counted accurately.

None

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.