75c24d0f74
Per discussion, there doesn't seem to be much value in having NUM_SPINLOCK_SEMAPHORES set to 1024: under any scenario where you are running more than a few backends concurrently, you really had better have a real spinlock implementation if you want tolerable performance. And 1024 semaphores is a sizable fraction of the system-wide SysV semaphore limit on many platforms. Therefore, reduce this setting's default value to 128 to make it less likely to cause out-of-semaphores problems.
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. 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/.