Question

My os and drive is

OS: Windows XP sp2 or Linux SUSE 9 or Cygwin
Compiler: Visual C++ 2003 or Gcc or Cygwin
PC and os are both 32 bits

So, How can I create a super-huge file in secs

I was told to use MappingFile functions. I failed to create files over 2G
So…
Your warm responses will be all appreciated
thanks

Answer 1

Using dd in Linux to create a 1 gb file takes 57 seconds ‘wall clock time’ on a somewhat loaded box with a slow disk, and about 17 seconds system time:

$ time dd if=/dev/zero of=bigfile bs=G count=1
1+0 records in
1+0 records out
1073741824 bytes (1.1 GB) copied, 53.9903 s, 19.9 MB/s

real    0m56.685s
user    0m0.008s
sys     0m17.113s
$