79534f9065
The previous commits reduced the amount of memory available for locks by eliminating the "safety margins" and by settling the split between LOCK and PROCLOCK tables at startup. The allocation is now more deterministic, but it also means that you often hit one of the limits sooner than before. To compensate for that, bump up max_locks_per_transactions from 64 to 128. With that there is a little more space in the both hash tables than what was the effective maximum size for either table before the previous commits. This only changes the default, so if you had changed max_locks_per_transactions in postgresql.conf, you will still have fewer locks available than before for the same setting value. This should be noted in the release notes. A good rule of thumb is that if you double max_locks_per_transactions, you should be able to get as many locks as before. Reviewed-by: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com> Reviewed-by: Matthias van de Meent <boekewurm+postgres@gmail.com> Discussion: https://www.postgresql.org/message-id/e07be2ba-856b-4ff5-8313-8b58b6b4e4d0@iki.fi |
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| configure | ||
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| COPYRIGHT | ||
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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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.