table of contents
| BLK_QUEUE_IO_MIN(9) | Block Devices | BLK_QUEUE_IO_MIN(9) |
NAME¶
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.
COPYRIGHT¶
| June 2024 | Kernel Hackers Manual 3.10 |