94cad7a3e6
In generate_orderedappend_paths(), when match_partition_order_desc was true, we would lcons() items to various lists in a loop over each live partition. When the number of live partitions was large, the lcons() could show up in profiles due to it having to perform memmove() to make way for the new list item. Here we adjust things so that we just perform the loop over the live partitions backwards when match_partition_order_desc is true. This allows us to simplify the logic in the loop. Now, as far as the guts of the loop knows, there's no difference between match_partition_order and match_partition_order_desc. We can just set match_partition_order to true so that we build the correct list of paths for the asc and desc case. Per idea from Andres Freund. Discussion: https://postgr.es/m/20230217002351.nyt4y5tdzg6hugdt@awork3.anarazel.de |
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| config | ||
| contrib | ||
| doc | ||
| src | ||
| .cirrus.yml | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| COPYRIGHT | ||
| GNUmakefile.in | ||
| HISTORY | ||
| Makefile | ||
| README | ||
| README.git | ||
| aclocal.m4 | ||
| configure | ||
| configure.ac | ||
| meson.build | ||
| meson_options.txt | ||
README
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/.