Comment 447 for bug 620074

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In , l.wandrebeck (l.wandrebeck-linux-kernel-bugs) wrote :

I'm really unsure CFQ is the (only ?) culprit.
I've met the same behaviour using deadline and a 3ware 9650, and the fix was a completely other thing (pci_set_mwi).
See https://bugzilla.redhat.com/show_bug.cgi?id=444759 for more details.