pkg-1.7.0 is an order of magnitude slower than pkg-1.6.4

[Michael Grimm]

Hi —

This is 10.3-PRERELEASE (r297387).

I did upgrade ports-mgmt/pkg today and ever since, I do observe a significant slow-down when it comes to reinstalling ports from my poudriere repository:

26 seconds for 74 ports within a jail and pkg-1.6.4:
----------------------------------------------------
	Mar 29 18:19:56 <user.notice> pkg: indexinfo reinstalled: 0.2.4 -> 0.2.4 
	…
	Mar 29 18:20:22 <user.notice> pkg: pkg reinstalled: 1.6.4_1 -> 1.6.4_1


309 seconds for the very same 74 ports within the very same jail and pkg-1.7.0:
-------------------------------------------------------------------------------
	Apr 2 14:09:55 <user.notice> pkg: indexinfo reinstalled: 0.2.4 -> 0.2.4
	…
	Apr 2 14:15:04 <user.notice> pkg: pkg reinstalled: 1.7.0 -> 1.7.0

This is reproducible, this is true for all my ports in all my jails and on the host.

Is this an expected slow-down? /usr/ports/UPGRADE and https://svnweb.freebsd.org/ports/head/ports-mgmt/pkg/?view=log are not indicating that behavior.
But I might have missed something.

Any feedback is highly appriciated, thanks, and regards,
Michael