Re: [PATCH] kbuild: Disable extra debugging info in .s output

Masahiro Yamada
2019-02-01T10:52:15Z

On Fri, Feb 1, 2019 at 7:32 PM Borislav Petkov <bp@alien8.de> wrote:
>
> On Fri, Feb 01, 2019 at 07:09:36PM +0900, Masahiro Yamada wrote:
> > I provide the result of "perf stat" of the incremental build for you.
>
> One more question: what exactly is that "incremental build" you're
> measuring with?

I meant "make" after you the full build

> Exact command line please.

$ make defconfig
$ make -j8

[Wait until the full build finished]

$ perf stat --repeat 20 --null make -j8

[Wait until the perf result is displayed]

> > Without your patch:
> >
> >
> > Performance counter stats for 'make -j8' (20 runs):
> >
> > 2.721312445 seconds time elapsed
> > ( +- 1.02% )
> >
> >
> >
> > With you patch:
> >
> >
> > Performance counter stats for 'make -j8' (20 runs):
> >
> > 5.038521415 seconds time elapsed
> > ( +- 0.56% )
>
> This can't be a full kernel build.
>
> Thx.
>
> --
> Regards/Gruss,
> Boris.
>
> Good mailing practices for 400: avoid top-posting and trim the reply.

--
Best Regards
Masahiro Yamada