Comment 259 for bug 131094

I've noticed something very weird, when running tiobench, When run on the root filesystem I'm experiencing same as everyone else, When the exact same test is run/written from/to something else than the root fs, io wait is much lower, responsiveness is excellent and data rate is excellent too.

I can't seem to find any paramaters which are different across filesystems, ruled out lvm, and it's on the same disk.