On Fri, 2011-04-29 at 00:40 +0200, Jan Kara wrote: > James in the meantime identified that cgroups are somehow involved. > Are you > using systemd by any chance? Maybe cgroup IO throttling screws us? Yes, this is a FC15 system with systemd as the default. See related post: it looks like disabling the memory controller is what makes this go away. James -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html