blk_queue_io_opt9
Set optimal request size for the queue
Usage
void blk_queue_io_opt(struct request_queue * q, unsigned int opt);
Arguments
q
the request queue for the device
opt
optimal request size in bytes
Overview
Storage devices may report an optimal I/O size, which is the device's preferred unit for sustained I/O. This is rarely reported for disk drives. For RAID arrays it is usually the stripe width or the internal track size. A properly aligned multiple of optimal_io_size is the preferred request size for workloads where sustained throughput is desired.
Releases
4 releases since Debian 6.0 (Squeeze); the text changed 3 times.