blk_queue_io_min (9) Linux Manual Page
blk_queue_io_min – set minimum request size for the queue
Synopsis
void blk_queue_io_min(struct request_queue *q, unsigned int min);Arguments
q
-
- the request queue for the device
min
- smallest I/O size in bytes
Description
Storage devices may report a granularity or preferred minimum I/O size which is the smallest request the device can perform without incurring a performance penalty. For disk drives this is often the physical block size. For RAID arrays it is often the stripe chunk size. A properly aligned multiple of minimum_io_size is the preferred request size for workloads where a high number of I/O operations is desired.