Sluggish scheduling during a long disk copy

[Szabolcs Szakacsits]

Kris Kennaway <kris <at> FreeBSD.org> writes:

> Sounds like it to me.  ntfs-3g uses FUSE, which is a userland filesystem 
> framework.  By design it will have poor I/O performance since every I/O 
> transfer will require multiple trips into and out of the kernel.

Performance doesn't work like that for file systems because typically 
the dominant factors are the file system design and the quality of the 
implementation. 

Even the still unoptimized ntfs-3g driver can far outperform other 
kernel file systems in streaming read/write speed (maximum ever 
measured sustained write speed is 902 MByte/s) and IO ops on Linux.

Regards,   Szaka

--
NTFS-3G: http://ntfs-3g.org