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| author |   Song Liu <songliubraving@fb.com> | 2021-09-07 16:03:38 -0700 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2021-09-07 17:05:12 -0600 |
| commit | 7f2a6a69f7ced6db8220298e0497cf60482a9d4b (patch) | |
| tree | a0cd135c8be2a9327e124f5788057ff9d83b547a /MAINTAINERS | |
| parent | block: move fs/block_dev.c to block/bdev.c (diff) | |
| download | linux-dev-7f2a6a69f7ced6db8220298e0497cf60482a9d4b.tar.xz linux-dev-7f2a6a69f7ced6db8220298e0497cf60482a9d4b.zip | |
blk-mq: allow 4x BLK_MAX_REQUEST_COUNT at blk_plug for multiple_queues
Limiting number of request to BLK_MAX_REQUEST_COUNT at blk_plug hurts
performance for large md arrays. [1] shows resync speed of md array drops
for md array with more than 16 HDDs.
Fix this by allowing more request at plug queue. The multiple_queue flag
is used to only apply higher limit to multiple queue cases.
[1] https://lore.kernel.org/linux-raid/CAFDAVznS71BXW8Jxv6k9dXc2iR3ysX3iZRBww_rzA8WifBFxGg@mail.gmail.com/
Tested-by: Marcin Wanat <marcin.wanat@gmail.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'MAINTAINERS')
0 files changed, 0 insertions, 0 deletions