0265e5c120
Run the tests in a RAM disk. It's still a UFS file system and is backed by 20GB of disk, but this avoids a lot of I/O. Even though we disable fsync, our tests do a lot of directory manipulations, some of which force file system meta-data to disk and flush slow device write caches on UFS. This was a bottleneck preventing effective scaling beyond 2 CPUs. Now we can use 4 CPUs like on other OSes, for a huge speedup. Reviewed-by: Maxim Orlov <orlovmg@gmail.com> Discussion: https://postgr.es/m/CA%2BhUKG%2BFXLcEg1dyTqJjDiNQ8pGom4KrJj4wF38C90thti9dVA%40mail.gmail.com
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/.