4e37b3e15c
On faster machines, the overall runtime for running the core regression tests is under twenty seconds these days, of which the hard-wired delays in the stats test are a significant fraction. But on closer inspection, it seems like we shouldn't need those. The initial 2-second delay is there only to reduce the risk of the test's stats messages not getting sent due to contention. But analysis of the last ten years' worth of buildfarm runs shows no evidence that such failures actually occur. (We do see failures that look like stats messages not getting sent, particularly on Windows; but there is little reason to believe that the initial delay reduces their frequency.) The later 1-second delay is there to ensure that our session's stats will have gotten sent. But we could also do that by starting a fresh session, which takes well under 1 second even on very slow machines. Hence, let's remove both delays and see what happens. The first delay was the only test of pg_sleep_for() in the regression tests, but we can move that responsibility into wait_for_stats(). Discussion: https://postgr.es/m/17795.1493869423@sss.pgh.pa.us |
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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: 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/.