Re: 回复：[PATCH] perf: optimize clear page in Intel specified model with movq instruction

[Borislav Petkov]

On Sat, Oct 16, 2021 at 08:58:32PM +0800, JY Ni wrote:
> I rebased this patch on linux-next repo and measured the time of building a
> same kernel in original/add-movq-patch version on the same intel CPX server.

...

> delta = (*build_original_time* - *build_movq_time*) / (*build_movq_time*)
> 
> This set of data shows that movq-patch version has better performance than
> original version in most cases.

First of all, please do not top-post but put your answer under the
quoted text like everyone else.

Then, please explain how exactly you ran that measurement so that I can
try to reproduce it here too.

And just to make sure we're talking about the same thing: the patch in
question is this one:

https://lore.kernel.org/r/1631177151-53723-1-git-send-email-wujinhua@xxxxxxxxxxxxxxxxx

correct?

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette