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

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Message-ID: <20190201103038.GE31854@zn.tnic>
Date:   Fri, 1 Feb 2019 11:30:38 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>
Subject: Re: [PATCH] kbuild: Disable extra debugging info in .s output

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?

Exact command line please.

> 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.

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