The load-names benchmark was originally only measuring single thread
performance of the data structures. As this is not how those are used
in the real life, it was refactored to be multi-threaded with proper
protections in place (rwlock for ht, hashmap and rbt; transactions for
qp).
The qp test has been extended to see effect of the dns_qp_compact() and
rcu_barrier() on the overall speed and memory consumption.
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