1BLK_QUEUE_IO_MIN(9)              Block Devices             BLK_QUEUE_IO_MIN(9)
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NAME

6       blk_queue_io_min - set minimum request size for the queue
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SYNOPSIS

9       void blk_queue_io_min(struct request_queue * q, unsigned int min);
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ARGUMENTS

12       q
13           the request queue for the device
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15       min
16           smallest I/O size in bytes
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DESCRIPTION

19       Storage devices may report a granularity or preferred minimum I/O size
20       which is the smallest request the device can perform without incurring
21       a performance penalty. For disk drives this is often the physical block
22       size. For RAID arrays it is often the stripe chunk size. A properly
23       aligned multiple of minimum_io_size is the preferred request size for
24       workloads where a high number of I/O operations is desired.
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27Kernel Hackers Manual 2.6.       November 2011             BLK_QUEUE_IO_MIN(9)
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