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Searched refs:async_depth (Results 1 – 9 of 9) sorted by relevance

/linux/Documentation/ABI/stable/
H A Dsysfs-block612 What: /sys/block/<disk>/queue/async_depth
621 - async_depth is always equal to nr_requests.
625 - By default, async_depth is set to 75% of nr_requests.
628 * Sync writes: limited to async_depth (≈75% of nr_requests).
629 * Async I/O: limited to ~2/3 of async_depth (≈50% of
634 * Sync writes: limited to ~1/2 of async_depth (≈37% of
636 * Async I/O: limited to ~1/4 of async_depth (≈18% of
639 - If the user writes a custom value to async_depth, BFQ will
644 - By default async_depth is set to 75% of nr_requests.
645 - If the user writes a custom value to async_depth, then it
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/linux/block/
H A Dkyber-iosched.c400 blk_mq_set_min_shallow_depth(q, q->async_depth); in kyber_depth_updated()
410 q->async_depth = q->nr_requests * KYBER_DEFAULT_ASYNC_PERCENT / 100; in kyber_init_sched()
550 data->shallow_depth = data->q->async_depth; in kyber_limit_depth()
H A Dmq-deadline.c491 data->shallow_depth = data->q->async_depth; in dd_limit_depth()
497 blk_mq_set_min_shallow_depth(q, q->async_depth); in dd_depth_updated()
562 q->async_depth = q->nr_requests; in dd_init_sched()
H A Dblk-sysfs.c140 return queue_var_show(disk->queue->async_depth, page); in queue_async_depth_show()
164 q->async_depth = min(q->nr_requests, nr); in queue_async_depth_store()
H A Dbfq-iosched.c7115 unsigned int async_depth = q->async_depth; in bfq_depth_updated() local
7130 bfqd->async_depths[0][1] = async_depth; in bfq_depth_updated()
7131 bfqd->async_depths[0][0] = max(async_depth * 2 / 3, 1U); in bfq_depth_updated()
7132 bfqd->async_depths[1][1] = max(async_depth >> 1, 1U); in bfq_depth_updated()
7133 bfqd->async_depths[1][0] = max(async_depth >> 2, 1U); in bfq_depth_updated()
7358 q->async_depth = (q->nr_requests * 3) >> 2; in bfq_init_queue()
H A Delevator.c592 q->async_depth = q->tag_set->queue_depth; in elevator_switch()
H A Dblk-core.c466 q->async_depth = BLKDEV_DEFAULT_RQ; in blk_alloc_queue()
H A Dblk-mq.c4666 q->async_depth = set->queue_depth; in blk_mq_init_allocated_queue()
5044 q->async_depth = max(q->async_depth * nr / q->nr_requests, 1); in blk_mq_update_nr_requests()
/linux/include/linux/
H A Dblkdev.h554 unsigned int async_depth; /* Max # of async requests */ member