qptrie zonetable slows loading lots of small zones

Since !7582 (merged) was merged zone loading test with 1M small zones is ~ 3.3 slower than it used to be.

Try to load 1M small zones :-)

We have small test for that in bin/tests/startperf. Perflab is testing with 1M zones (albeit different).

Perflab chart (Y axis is time to start daemon, despite the description):

It's interesting that memory consumption is so jumpy:

Memory consumption used to be much smoother before the qptrie zone table:

Edited May 04, 2023 by Michał Kępień

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