size of kernel after gcc4.2 upgrade
Alexander Leidinger
Alexander at Leidinger.net
Fri May 25 11:54:38 UTC 2007
Quoting Ruslan Ermilov <ru at FreeBSD.org> (from Fri, 25 May 2007
14:52:03 +0400):
> On Fri, May 25, 2007 at 11:51:46AM +0200, Roman Divacky wrote:
>> hi
>>
>> I just noticed that
>> spravci ~# ls -l /boot/kernel*/kernel
>> -r-xr-xr-x 1 root wheel 3389971 May 18 12:03 /boot/kernel.old/kernel*
>> -r-xr-xr-x 1 root wheel 5211345 May 25 11:47 /boot/kernel/kernel*
>>
>> ie. after gcc42 import the kernel size increased roughly by 60% thats
>> a little too much. is there any forgotten option or something that
>> makes the kernel grow so big?
>>
> My numbers are different (1% for the GENERIC kernel, and this
> is with all code changes in-between):
>
> -r-xr-xr-x 1 root wheel 8942239 Apr 11 16:20 kernel.old/kernel
> -r-xr-xr-x 1 root wheel 9035021 May 24 16:23 kernel/kernel
>
> bde@ also reported a 1% code bloat in another thread, so I think
> you should look at your own changes.
My minimal kernel without additional changes shows:
-r-xr-xr-x 1 root wheel 2.5M 7 Apr 17:22 /boot/kernel.old/kernel*
-r-xr-xr-x 1 root wheel 8.1M 7 Apr 17:22 /boot/kernel.old/kernel.symbols*
-r-xr-xr-x 1 root wheel 3.9M 24 Mai 18:46 /boot/kernel/kernel*
-r-xr-xr-x 1 root wheel 14M 24 Mai 18:46 /boot/kernel/kernel.symbols*
But this is with debugging (-g) enabled. How's the .symbols generated?
Can there be some new stuff in the kernel which needs to be handled in
the .symbols file generation?
Bye,
Alexander.
--
The relative importance of files depends on their cost
in terms of the human effort needed to regenerate them.
-- T. A. Dolotta
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