Greg Freemyer wrote:
To repeat:
with dd -> ext4 75 MB/sec data transfer and 160% cpu load (uses multiple cores. No single core overloaded.)
with dd -> ntfs 25-30 MB/sec data transfer and only 120% cpu load (one core running mount.ntfs at 75% load)
I actually find that kind of strange, but it was repeatable.
I think it is pretty clear that mount.ntfs is the bottleneck.
I guess mount.ntfs is the FUSE binary?
The open (and unimportant) question if it is just poorly written or if the fact it is based on fuse makes it inefficient no matter what.
The FUSE cuases two context switches per operation, it is bound to have an impact. A factor 2.5-3 seems a lot, though. -- Per Jessen, Zürich (3.8°C) http://www.dns24.ch/ - free DNS hosting, made in Switzerland. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org