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

[Yu Kuai]

Hi,

在 2024/04/06 15:57, Yu Kuai 写道:
> 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.

Friendly ping ...
> Thanks!
> Kuai
>
> 在 2024/03/23 11:59, Yu Kuai 写道:
> > From: Yu Kuai <yukuai3@xxxxxxxxxx>
> >
> > 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(-)
>
> .