ORACLE UEK 4 : Where is my I/O scheduler ? None ? [Multi-queue model blk-mq]HomeORACLE UEK 4 : Where is my I/O scheduler ? None ? [Multi-queue model blk-mq] If you upgraded to the new Unbreakable Enterprise Kernel Release 4,then if you take a quick look at the I/O scheduler used by your block devices this is what you will see : cat /sys/block/sdb/queue/scheduler none none !! what ? At first this may seem strange but after a few check this is indeed the result of the impl
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