On Thu, 8 Apr 2004 [EMAIL PROTECTED] wrote: >I am having problems copying large files (>400MB) from an >ext3 linux (Red Hat) filesystem onto a USB device (Maxtor external >hard drive) formatted with a vfat filesystem. The kernel version >is 2.4.21-4 (Red Hat Enterprise Linux 3.0 ES).
Do you have USB 2.0 in use in both peers and appropriate drivers? >I have been using an 888MB file as a test file; when I try to >cp this file onto the USB device, the command locks up and >does not return (I've waited > 2 hours); in fact, the entire I wonder if there some specific file size that causes the lock up, and if so, what it is. >rsync reports transfer stats every few seconds while copying; >the intitial rate was between 10 - 20 MB/sec, but it began to slow down >around the 400MB mark, and became progressively slower; >by completion, it was down to 700kb/sec. >It took about 30 mins for the 888MB file to complete copying. The theoretical maximum USB 1.0 speed would be around 1.4 MB/s, so if your system is using USB 1.0 this would be quite realistic speed. The fast initial speed could be due to caching. ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
