I wonder if this "perf c2c" tool with Linux 4.10 might be useful in studying this problem. https://joemario.github.io/blog/2016/09/01/c2c-blog/
-- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
