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There was no I/O timing statistics for counting read and write timings on local blocks, contrary to the counterparts for temp and shared blocks. This information is available when track_io_timing is enabled. The output of EXPLAIN is updated to show this information. An update of pg_stat_statements is planned next. Author: Nazir Bilal Yavuz Reviewed-by: Robert Haas, Melanie Plageman Discussion: https://postgr.es/m/CAN55FZ19Ss279mZuqGbuUNxka0iPbLgYuOQXqAKewrjNrp27VA@mail.gmail.com