Enabling a single multiconfig that does nothing increases the size of the bitbake parse cache by a factor of about 5 and slows down the speed at which the parsing caches is loaded by an even larger amount
Fix in http://lists.openembedded.org/pipermail/bitbake-devel/2019-May/020028.html needs backported to 2.6 and 2.7 once it lands on master
http://git.yoctoproject.org/cgit.cgi/poky/commit/?id=66fd4c13d97a23338f6cdde6770ffb0e60f0b814
Needs backport to 2.7 and 2.6(?)
http://git.yoctoproject.org/cgit.cgi/poky/commit/?h=warrior&id=d6462e014989db9536691d7f2fdda01d0d0a8526 http://git.yoctoproject.org/cgit.cgi/poky/commit/?h=thud&id=a358cc20104a554d1336fdb80bf39fe8603527ef