Messages in this thread | | | From | Fam Zheng <> | Subject | [PATCH v3 0/3] Implement BFQ per-device weight interface | Date | Wed, 28 Aug 2019 11:54:50 +0800 |
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v3: Pick up rev-by and ack-by from Paolo and Tejun. Add commit message to patch 3.
(Revision starting from v2 since v1 was used off-list)
Hi Paolo and others,
This adds to BFQ the missing per-device weight interfaces: blkio.bfq.weight_device on legacy and io.bfq.weight on unified. The implementation pretty closely resembles what we had in CFQ and the parsing code is basically reused.
Tests =====
Using two cgroups and three block devices, having weights setup as:
Cgroup test1 test2 ============================================ default 100 500 sda 500 100 sdb default default sdc 200 200
cgroup v1 runs --------------
sda.test1.out: READ: bw=913MiB/s sda.test2.out: READ: bw=183MiB/s
sdb.test1.out: READ: bw=213MiB/s sdb.test2.out: READ: bw=1054MiB/s
sdc.test1.out: READ: bw=650MiB/s sdc.test2.out: READ: bw=650MiB/s
cgroup v2 runs --------------
sda.test1.out: READ: bw=915MiB/s sda.test2.out: READ: bw=184MiB/s
sdb.test1.out: READ: bw=216MiB/s sdb.test2.out: READ: bw=1069MiB/s
sdc.test1.out: READ: bw=621MiB/s sdc.test2.out: READ: bw=622MiB/s
Fam Zheng (3): bfq: Fix the missing barrier in __bfq_entity_update_weight_prio bfq: Extract bfq_group_set_weight from bfq_io_set_weight_legacy bfq: Add per-device weight
block/bfq-cgroup.c | 151 +++++++++++++++++++++++++++++++++----------- block/bfq-iosched.h | 3 + block/bfq-wf2q.c | 2 + 3 files changed, 119 insertions(+), 37 deletions(-)
-- 2.22.1
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