size of kernel after gcc4.2 upgrade

[Eric Anderson]

On 05/25/07 06:54, Alexander Leidinger wrote:
> 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?

Hmm.  Here's mine, with debugging, without WITNESS, or INVARIANTS:

$ ls -alh kernel*/kernel
-r-xr-xr-x  1 root  wheel   7.2M Apr 24 10:24 kernel.old/kernel
-r-xr-xr-x  1 root  wheel   8.1M May 21 11:22 kernel/kernel

Also - are you compiling in hints, or not?

Eric