ntfs-3g - extreme CPU hog on large file writes

[lyallp]

I have noticed, since I started fiddling with a disk image and VirtualBox, that large files (40G) on NTFS partitions, under linux use insane amounts of CPU when creating the large files.

For example, I have a 40G virtual disk image - it works how I want, so I make a backup by copying it.

During the copy, mount.ntfs-3g soaks up over 60% of my Intel P4 2.6Ghz Hyperthreaded CPU.

I am running ntfs3g version 1.2812 (I am using ~x86) and the disks on which the NTFS systems exist, are SATA.

Writing large amounts to my other XFS filesystems, even the ones that are software raided, do not use so much CPU.

Any ideas?
_________________
...Lyall

[Januszzz]

No idea


...but when I was in real trouble when compiling ntfs-3g with b0rked fuse lib on uclibc arch, I've found EXTREMELY good help from main developer of ntfs-3g - Szabolcs Szakacsits (don't even try to think how to spell his name )

Try here:

http://forum.ntfs-3g.org/

[irgu]

Seemingly this is it: http://www.ntfs-3g.org/support.html#slowwrite