path: root/block
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authorPaolo Valente <paolo.valente@linaro.org>2019-08-22 17:20:36 +0200
committerJens Axboe <axboe@kernel.dk>2019-09-17 20:03:49 -0600
commit17c3d2660268501d36b75c7c7083dc8f2bbb93c3 (patch)
tree3f8c857750496a9a1dec9a4720c237db91f5243f /block
parentc1e0a18228822258cbeb49a923d93f8f01c74a76 (diff)
block, bfq: increase update frequency of inject limit
The update period of the injection limit has been tentatively set to 100 ms, to reduce fluctuations. This value however proved to cause, occasionally, the limit to be decremented for some bfq_queue only after the queue underwent excessive injection for a lot of time. This commit reduces the period to 10 ms. Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name> Signed-off-by: Paolo Valente <paolo.valente@linaro.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
1 files changed, 1 insertions, 1 deletions
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index e114282204f6..ddac93e910fa 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -2016,7 +2016,7 @@ static void bfq_add_request(struct request *rq)
(bfqq->last_serv_time_ns > 0 &&
bfqd->rqs_injected && bfqd->rq_in_driver > 0)) &&
time_is_before_eq_jiffies(bfqq->decrease_time_jif +
- msecs_to_jiffies(100))) {
+ msecs_to_jiffies(10))) {
bfqd->last_empty_occupied_ns = ktime_get_ns();
* Start the state machine for measuring the

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