did anything change in F18+ building stack which would increase the requirements?

[Panu Matilainen]

On 11/22/2012 12:03 AM, Julian Sikorski wrote:
> W dniu 10.11.2012 10:51, Julian Sikorski pisze:
>> Hi,
>>
>> I was wondering if it was possible to monitor the maximum and/or average
>> memory usage of a mock build process. I am trying to investigate why a
>> package takes less 2 hours to build on F16/F17, 24 hours on F18 and 7
>> hours on rawhide:
>> https://bugzilla.rpmfusion.org/show_bug.cgi?id=2554
>>
>> Regards,
>> Julian
>>
> Hi,
>
> I would like to follow up on this issue. I did not notice the
> differences when mock building locally, but on the plague RPM Fusion
> builder it took 2 hours on F16/F17 and 30 (sic!) on F18 to build mame.
> Suspecting memory usage issue I already added
>
> %global optflags %{optflags} -Wl,--no-keep-memory
> -Wl,--reduce-memory-overheads
>
> to the spec file. Thank you for the input in advance.

Here's one difference between F18 and earlier that does affect memory usage:
https://fedoraproject.org/wiki/Features/DwarfCompressor
See https://bugzilla.redhat.com/show_bug.cgi?id=833311 and 
/etc/rpm/macros.dwz for further info on memory consumption and tunables.

But then this is the same in rawhide and f18 so it doesn't explain why 
the build takes *that* much longer on f18.

	- Panu -