You could do your own buffering. 
my %bufs;

sub buf_print {
   my $fh = shift @_;
   $bufs{$fh} .= join($,, @_) . $\;
   my $to_write = int( length($bufs{$fh}) / $buf_size ) * $buf_size;
   syswrite($fh, substr($bufs{$fh}, 0, $to_write, '')) if $to_write;
}

sub buf_flush {
   my $fh = shift @_;
   my $to_write = length($bufs{$fh});
   syswrite($fh, substr($bufs{$fh}, 0, $to_write, '')) if $to_write;
}

[download]

The above isn't nicely packaged, but you get the idea.

If you're writting the same tihng to every handle, you can even use a single buffer instead of a buffer per handle. Efficient!

In reply to Re: Increasing the write buffer by ikegami
in thread Increasing the write buffer by accassar

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