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This patch fixes three places (which AFAICT is all of them) where runtime was O(N^2) in the number of TOC entries, by using an index array to replace linear searches of the TOC list. This performance issue is a bit less bad than those recently fixed, because it depends on the number of items dumped not the number in the source database, so the problem can be dodged by doing partial dumps. The previous coding already had an instance of one of the two index arrays needed, but it was only calculated in parallel-restore cases; now we need it all the time. I also chose to move the arrays into the ArchiveHandle data structure, to make this code a bit more ready for the day that we try to sling multiple ArchiveHandles around in pg_dump or pg_restore. Since we still need some server-side work before pg_dump can really cope nicely with tens of thousands of tables, there's probably little point in back-patching.
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: http://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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.