Bernd Schubert wrote:
Try to increase the read-ahead size of your lvm devices: blockdev --setra 8192 /dev/raid10/space or increase it at least to the same size as of your raid (blockdev --getra /dev/mdX).
This did the trick, although I am still lagging behind the raw md device by about 3 - 4%. Thanks for pointing this out!
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