Re: [PATCH 0/3] optimize the queue idle judgment

[yukuai (C)]

On 2021/07/14 17:45, Yu Kuai wrote:
> bfqq might plug I/O dispatch when it remains temporarily empty while
> being served, this will benefit for both sequence io bandwidth and relative
> sync io control.
>
> This path set tries to extend the two special cases that idle is not
> needed, and can get better bandwidth.
>
> 1) only one group is activated.
> 2) when more than one groups are activated, all queues are issuring
> requests with same size.
>
> Yu Kuai (3):
>    block, bfq: do not idle if only one cgroup is activated
>    block, bfq: add support to record request size information
>    block, bfq: consider request size in bfq_asymmetric_scenario()
>
>   block/bfq-iosched.c | 50 +++++++++++++++++++++++++++++++++++++--------
>   block/bfq-iosched.h | 16 +++++++++++++++
>   2 files changed, 57 insertions(+), 9 deletions(-)

ping ...