1BLK_QUEUE_IO_OPT(9)              Block Devices             BLK_QUEUE_IO_OPT(9)
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NAME

6       blk_queue_io_opt - set optimal request size for the queue
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SYNOPSIS

9       void blk_queue_io_opt(struct request_queue * q, unsigned int opt);
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ARGUMENTS

12       q
13           the request queue for the device
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15       opt
16           optimal request size in bytes
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DESCRIPTION

19       Storage devices may report an optimal I/O size, which is the device's
20       preferred unit for sustained I/O. This is rarely reported for disk
21       drives. For RAID arrays it is usually the stripe width or the internal
22       track size. A properly aligned multiple of optimal_io_size is the
23       preferred request size for workloads where sustained throughput is
24       desired.
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27Kernel Hackers Manual 3.10         June 2019               BLK_QUEUE_IO_OPT(9)
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