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(-) -- 2.31.1
