Re: [PATCH 0/2] block: support to account io_ticks precisely

[Yu Kuai <yukuai1@huaweicloud.com>]

Hi, Jens!
Hi, Ming!
Hi, Christoph!
Hi, Bart!

Friendly ping ...

The 'util' reported by iostat is very important for users, they don't
have much choise to get disk status, while 'util' has been inaccurate
for a long time unnecessarily. I really think patch 1 is meaningful.

Patch 2 also tries to fix a problem by our customer that util can
sometimes be huge. The root cause is that 'inflight' is account from
blk_mq_start_request() while 'io_ticks' is account from
blk_account_io_start(), there is a gap. I let 'inflight' to be account
from blk_account_io_start() as well, please let me know if this is not
good.

Thanks!
Kuai

在 2024/03/23 11:59, Yu Kuai 写道:
> From: Yu Kuai <yukuai3@huawei.com>
> 
> Yu Kuai (2):
>    block: support to account io_ticks precisely
>    block: remove blk_mq_in_flight() and blk_mq_in_flight_rw()
> 
>   block/blk-core.c  |  9 +++++----
>   block/blk-merge.c |  2 ++
>   block/blk-mq.c    | 36 ++++--------------------------------
>   block/blk-mq.h    |  5 -----
>   block/blk.h       |  1 +
>   block/genhd.c     | 20 ++++----------------
>   6 files changed, 16 insertions(+), 57 deletions(-)
>