> -Original Message-
> From: Jakub Jelinek
> Sent: Tuesday, October 10, 2023 3:57 PM
> To: Zhang, Jun
> Cc: gcc-patches@gcc.gnu.org; ubiz...@gmail.com; Liu, Hongtao
>
> Subject: Re: [PATCH] x86: set spincount 1 for x86 hybrid platform [PR109812]
>
> On Tue,
There are two kinds of pause bottleneck, one is in user space, the other
is in kernel. Tpause plus backoff could reduce loop count in user space.
To kernel, Because tasks start at same time, they usually arrive critial
area at same time, this decrease performance. tasks started one by one
could avo
