d17ffc734d
Relation files extended by multiple blocks at a time have been counting the number of blocks written, but forgot to increment the write time in this case, as single-block write and relation extension are treated as two different I/O operations in the shared stats: IOOP_EXTEND vs IOOP_WRITE. In this case IOOP_EXTEND was forgotten for normal (non-temporary) relations, still the number of blocks written was incremented according to the relation extend done. Write times are tracked when track_io_timing is enabled, which is not the case by default. Author: Nazir Bilal Yavuz Reviewed-by: Robert Haas, Melanie Plageman Discussion: https://postgr.es/m/CAN55FZ19Ss279mZuqGbuUNxka0iPbLgYuOQXqAKewrjNrp27VA@mail.gmail.com Backpatch-through: 16
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.