From: Nick Desaulniers <ndesaulniers@google.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
clang-built-linux <clang-built-linux@googlegroups.com>
Subject: Re: Very slow clang kernel config ..
Date: Thu, 29 Apr 2021 19:22:27 -0700
Message-ID: <CAKwvOdk+V2dc31guafFM=N2ez4SrwCmah+mimUG3MzPMx_2efQ@mail.gmail.com> (raw)
In-Reply-To: <CAKwvOdmMF_v9TzBtFn2S1qSS_yCDO8D-u3WhBehUM7gzjcdjUQ@mail.gmail.com>
On Thu, Apr 29, 2021 at 5:19 PM Nick Desaulniers
<ndesaulniers@google.com> wrote:
>
> On Thu, Apr 29, 2021 at 2:53 PM Linus Torvalds
> <torvalds@linux-foundation.org> wrote:
> >
> > I haven't looked into why this is so slow with clang, but it really is
> > painfully slow:
> >
> > time make CC=clang allmodconfig
> > real 0m2.667s
> >
> > vs the gcc case:
> >
> > time make CC=gcc allmodconfig
> > real 0m0.903s
>
> Can
> you provide info about your clang build such as the version string,
> and whether this was built locally perhaps?
d'oh it was below.
> > This is on my F34 machine:
> >
> > clang version 12.0.0 (Fedora 12.0.0-0.3.rc1.fc34)
--
Thanks,
~Nick Desaulniers
next prev parent reply index
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-29 21:53 Linus Torvalds
2021-04-30 0:19 ` Nick Desaulniers
2021-04-30 2:22 ` Nick Desaulniers [this message]
2021-05-01 0:19 ` Nick Desaulniers
2021-05-01 0:23 ` Nick Desaulniers
2021-05-01 0:25 ` Nick Desaulniers
2021-05-01 0:40 ` Nick Desaulniers
2021-05-01 1:22 ` Linus Torvalds
2021-05-01 1:48 ` Nick Desaulniers
2021-05-01 2:16 ` Fangrui Song
2021-05-01 3:32 ` Tom Stellard
2021-05-01 16:32 ` Linus Torvalds
2021-05-01 19:57 ` Serge Guelton
2021-05-01 22:39 ` Linus Torvalds
2021-05-01 23:55 ` Fangrui Song
2021-05-01 21:58 ` David Laight
2021-05-02 9:31 ` Adrian Bunk
2021-05-02 11:35 ` David Laight
2021-05-02 16:12 ` Linus Torvalds
2021-05-02 16:45 ` Adrian Bunk
2021-05-02 16:49 ` Linus Torvalds
2021-05-02 17:55 ` Adrian Bunk
2021-05-02 17:59 ` Linus Torvalds
2021-05-02 21:48 ` Adrian Bunk
2021-05-04 22:02 ` Miguel Ojeda
2021-05-05 0:58 ` Theodore Ts'o
2021-05-05 17:21 ` Miguel Ojeda
2021-05-04 21:32 ` Miguel Ojeda
2021-05-05 11:05 ` David Laight
2021-05-05 13:53 ` Miguel Ojeda
2021-05-05 14:13 ` David Laight
2021-05-05 16:06 ` Miguel Ojeda
2021-05-05 16:25 ` David Laight
2021-05-05 17:55 ` Miguel Ojeda
2021-05-03 1:03 ` Maciej W. Rozycki
2021-05-03 14:38 ` Theodore Ts'o
2021-05-03 14:54 ` Theodore Ts'o
2021-05-03 17:14 ` Maciej W. Rozycki
2021-05-03 16:09 ` David Laight
2021-05-04 23:04 ` Greg Stark
2021-05-05 0:55 ` Theodore Ts'o
2021-05-01 23:37 ` Mike Hommey
2021-05-02 5:19 ` Dan Aloni
2021-05-03 16:48 ` Tom Stellard
2021-05-03 19:00 ` Fangrui Song
2021-04-30 0:52 ` Nathan Chancellor
2021-04-30 2:21 ` Nick Desaulniers
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