does MariaDB make usage of TSX on newer hardware or at least using glibc
for the query cache mutex which would implicit benfit form it?
just curious because next year we replace our cluster nodes and put them
in a EVC mode where TSX instrcutions are supported
https://en.wikipedia.org/wiki/Transactional_Synchronization_Extensions
https://www.flamingspork.com/blog/2014/06/05/performance-impact-of-mysql-query-cache-on-modern-hardware/
https://lwn.net/Articles/534758/
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