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Andres Freund 37a9aa6591 Fix performance regression from session statistics. ... Session statistics, as introduced by 960869da08, had several shortcomings: - an additional GetCurrentTimestamp() call that also impaired the accuracy of the data collected This can be avoided by passing the current timestamp we already have in pgstat_report_stat(). - an additional statistics UDP packet sent every 500ms This is solved by adding the new statistics to PgStat_MsgTabstat. This is conceptually ugly, because session statistics are not table statistics. But the struct already contains data unrelated to tables, so there is not much damage done. Connection and disconnection are reported in separate messages, which reduces the number of additional messages to two messages per session and a slight increase in PgStat_MsgTabstat size (but the same number of table stats fit). - Session time computation could overflow on systems where long is 32 bit. Reported-By: Andres Freund <andres@anarazel.de> Author: Andres Freund <andres@anarazel.de> Author: Laurenz Albe <laurenz.albe@cybertec.at> Discussion: https://postgr.es/m/20210801205501.nyxzxoelqoo4x2qc%40alap3.anarazel.de Backpatch: 14-, where the feature was introduced.		4 years ago
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ifaddrs	Update copyright for 2021	5 years ago
msvc	Revert refactoring of hex code to src/common/	4 years ago
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pginclude	Remove extraneous newlines added by perl copyright patch	5 years ago
pgindent	Fix performance regression from session statistics.	4 years ago
PerfectHash.pm	Speed up generation of Unicode hash functions.	4 years ago
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testint128.c	Update copyright for 2021	5 years ago
valgrind.supp	Avoid need for valgrind suppressions for pg_atomic_init_u64 on some platforms.	6 years ago
version_stamp.pl	Stamp HEAD as 15devel.	5 years ago
win32tzlist.pl	Update copyright for 2021	5 years ago