Re: kernel size

From: Richard B. Johnson (
Date: Tue Oct 09 2001 - 09:16:48 EST

On Tue, 9 Oct 2001, VDA wrote:

> Hi folks
> I recompiled my kernel with GCC 3.0.1 (was 2.95.x)
> and guess what - it got bigger...
> Somehow, I hoped in linux world software gets better
> with time, not worse...
> Maybe that's my fault (misconfigured GCC etc) ?
> What do you see?
> Being curious, I looked into vmlinux (uncompressed kernel).

It's much worse than you can imagine!

`strings /proc/kcore | grep GNU' >qqq.qqq`

Causes a file this big to be generated:
-rw-r--r-- 1 root root 1069748 Oct 9 10:01 qqq.qqq

That's how much space is being wasted by GNU advertising.

A single program:

int foo;

Compiled, produces this:

        .file "xxx.c"
        .version "01.01"
        .comm foo,4,4
        .ident "GCC: (GNU) egcs-2.91.66 19990314 (egcs-1.1.2 release)"

It __might__ be possible to link, without linking in ".ident", which
currently shares space with .rodata. My gcc man pages are not any
better than the usual Red Hat so I can't find out if there is any way
to turn OFF these spurious strings.

Dick Johnson

Penguin : Linux version 2.4.1 on an i686 machine (799.53 BogoMips).

    I was going to compile a list of innovations that could be
    attributed to Microsoft. Once I realized that Ctrl-Alt-Del
    was handled in the BIOS, I found that there aren't any.

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This archive was generated by hypermail 2b29 : Mon Oct 15 2001 - 21:00:24 EST