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Melanie Plageman 18cd15e706 Add connection establishment duration logging ... Add log_connections option 'setup_durations' which logs durations of several key parts of connection establishment and backend setup. For an incoming connection, starting from when the postmaster gets a socket from accept() and ending when the forked child backend is first ready for query, there are multiple steps that could each take longer than expected due to external factors. This logging provides visibility into authentication and fork duration as well as the end-to-end connection establishment and backend initialization time. To make this portable, the timings captured in the postmaster (socket creation time, fork initiation time) are passed through the BackendStartupData. Author: Melanie Plageman <melanieplageman@gmail.com> Reviewed-by: Bertrand Drouvot <bertranddrouvot.pg@gmail.com> Reviewed-by: Fujii Masao <masao.fujii@oss.nttdata.com> Reviewed-by: Daniel Gustafsson <daniel@yesql.se> Reviewed-by: Jacob Champion <jacob.champion@enterprisedb.com> Reviewed-by: Jelte Fennema-Nio <postgres@jeltef.nl> Reviewed-by: Guillaume Lelarge <guillaume.lelarge@dalibo.com> Discussion: https://postgr.es/m/flat/CAAKRu_b_smAHK0ZjrnL5GRxnAVWujEXQWpLXYzGbmpcZd3nLYw%40mail.gmail.com		10 months ago
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src	Add connection establishment duration logging	10 months ago
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