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Performance evaluation showed that using the mq-deadline scheduler for DASD devices leads to a significantly higher CPU consumption compared to using none scheduler while having the same amount of throughput. Setting none scheduler as default in the dasd udev rule. Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>