Documented connection_pool execution semantics #28

Job	Run time
docker-linux (build-clang3_6, build-clang3_6, linux/amd64)	1m 6s
docker-linux (build-clang7, build-clang7, linux/amd64)	59s
docker-linux (build-clang11, build-clang11, linux/amd64)	58s
docker-linux (build-clang14, build-clang14, linux/amd64, linux/arm64/v8)	3m 22s
docker-linux (build-clang16, build-clang16, linux/amd64)	1m 19s
docker-linux (build-clang17, build-clang17, linux/amd64)	58s
docker-linux (build-clang18, build-clang18, linux/amd64)	1m 6s
docker-linux (build-clang16-i386, build-clang16-i386, linux/amd64)	1m 11s
docker-linux (build-gcc5, build-gcc5, linux/amd64)	1m 4s
docker-linux (build-gcc6, build-gcc6, linux/amd64)	1m 2s
docker-linux (build-gcc10, build-gcc10, linux/amd64)	53s
docker-linux (build-gcc11, build-gcc11, linux/amd64, linux/arm64/v8)	3m 31s
docker-linux (build-gcc13, build-gcc13, linux/amd64)	1m 36s
docker-linux (build-gcc14, build-gcc14, linux/amd64)	2m 22s
docker-linux (build-cmake3_8, build-cmake3_8, linux/amd64)	1m 24s
docker-linux (build-noopenssl, build-noopenssl, linux/amd64)	1m 12s
docker-linux (build-docs, build-docs, linux/amd64)	1m 6s
dbs (mysql, 5.7.41, linux/amd64)	35s
dbs (mysql, 8.4.1, linux/amd64, linux/arm64/v8, --mysql-native-password=ON)	33s
dbs (mysql, 9.0.0, linux/amd64, linux/arm64/v8)	32s
dbs (mariadb, 11.4.2, linux/amd64, linux/arm64/v8)	28s
	27m 17s

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