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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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| isolation | ||
| locale | ||
| mb | ||
| modules | ||
| perl | ||
| recovery | ||
| regress | ||
| ssl | ||
| subscription | ||
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| README | ||
PostgreSQL tests ================ This directory contains a variety of test infrastructure as well as some of the tests in PostgreSQL. Not all tests are here -- in particular, there are more in individual contrib/ modules and in src/bin. Not all these tests get run by "make check". Check src/test/Makefile to see which tests get run automatically. authentication/ Tests for authentication examples/ Demonstration programs for libpq that double as regression tests via "make check" isolation/ Tests for concurrent behavior at the SQL level locale/ Sanity checks for locale data, encodings, etc mb/ Tests for multibyte encoding (UTF-8) support modules/ Extensions used only or mainly for test purposes, generally not suitable for installing in production databases perl/ Infrastructure for Perl-based TAP tests recovery/ Test suite for recovery and replication regress/ PostgreSQL's main regression test suite, pg_regress ssl/ Tests to exercise and verify SSL certificate handling subscription/ Tests for logical replication thread/ A thread-safety-testing utility used by configure