Claudio Grondi wrote: > I am on a Widows 2000 box using the NTFS file system. > Both up to now suggested approaches as > - tee.exe (where I used the http://david.tribble.com/dos/tee.exe > DOS-port with redirecting stdout to NULL) and > - parallel copy (hoping caching does the job) are by far > slower than the consecutive copy: > single copy speed 12-15 MByte/s > which gives effectively > 6-7 MByte/s, > tee.exe or twice copy in parallel > 1-3 MByte/s. > > Any other suggestions except writing an own > optimised version of tee.exe
Try this: http://mastermind.com.pl/multicopy/ This is small tool I've wrote, that does use large memory buffers with asynchronous I/O to copy file. Following command: multicopy c:\testfile d:\testfile e:\testfile f:\testfile will copy c:\testfile to d, e and f disks. With four separate IDE disks I can copy file at about 30MB/s, which means 120MB/s total I/O. You can give it a try, but I don't know if it will work fast with USB drives. HTH, sc0rp. -- http://mail.python.org/mailman/listinfo/python-list
