Re: [linux-next:master] [drivers/char/mem] 1b057bd800: stress-ng.splice.ops_per_sec -99.8% regression

[Max Kellermann <max.kellermann@xxxxxxxxx>]

On Wed, Oct 18, 2023 at 9:07 AM Oliver Sang <oliver.sang@xxxxxxxxx> wrote:
> it found a (very big) regression comparing to parent commit.
>
> 19e3e6cdfdc73400 1b057bd800c3ea0c926191d7950
> ---------------- ---------------------------
>          %stddev     %change         %stddev
>              \          |                \
>   12433266           -99.8%      22893 ą  3%  stress-ng.splice.ops_per_sec

Oliver, how is it possible that we have three times the throughput
(MB_per_sec) at 1/500ths the ops?