buildworld build times 10-stable vs. 11-stable

[Slawa Olhovchenkov]

On Sun, Jan 15, 2017 at 10:40:42AM -0600, Dan Mack wrote:

> I have a system which builds world, kernel, install, boot, installworld, 
> reboot several times per week.   I just noticed that my build times 
> increased from about (just cherry picking a couple build logs):
> 
>    Starting build of FreeBSD SVN [309852]  10.3-STABLE
>    Kernel will be GENERIC
>      building world ... 	90:35 0
> 
> 
>    Starting build of FreeBSD SVN [312099]  11.0-STABLE
>    Kernel will be GENERIC
>      building world ... 	146:23 0
> 
> before I start bisecting the log files, is there something obvious 
> introduced in 11 that I missed that would explain the roughly 50 minute 
> difference in my build times?   clang?  additional subsystems?

lldb/clang and related.