[PATCH BUGFIX/IMPROVEMENT 3/6] block, bfq: increase time window for waker detection
STALE2079d
REVIEWED: 9 (9M)
From: Paolo Valente <hidden>
Date: 2021-01-22 19:17:39
Also in:
lkml
Subsystem:
bfq i/o scheduler, block layer, the rest · Maintainers:
Yu Kuai, Jens Axboe, Linus Torvalds
1 review trailer.
Tests on slower machines showed current window to be way too small. This commit increases it. Tested-by: Jan Kara <jack@suse.cz> Signed-off-by: Paolo Valente <redacted> --- block/bfq-iosched.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index fdc5e163b2fe..43e2c39cf7b5 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c@@ -1931,7 +1931,7 @@ static void bfq_add_request(struct request *rq) if (bfqd->last_completed_rq_bfqq && !bfq_bfqq_has_short_ttime(bfqq) && ktime_get_ns() - bfqd->last_completion < - 200 * NSEC_PER_USEC) { + 4 * NSEC_PER_MSEC) { if (bfqd->last_completed_rq_bfqq != bfqq && bfqd->last_completed_rq_bfqq != bfqq->waker_bfqq) {
--
2.20.1