diff options
| author | Melanie Plageman <melanieplageman@gmail.com> | 2024-07-29 15:37:26 -0400 |
|---|---|---|
| committer | Melanie Plageman <melanieplageman@gmail.com> | 2024-07-29 15:39:38 -0400 |
| commit | 571e0ee40ebdaf0c75b11756620c9c9d453cc644 (patch) | |
| tree | 83e6369db9df8af5a7712f22b066d5148f2721ff | |
| parent | 6f6b0f193db4f850a94aeabf363bf03bd0642e60 (diff) | |
Use DELETE instead of UPDATE to speed up vacuum test
01e2b7f0fd02a44e introduced a test which generated dead tuples for
vacuum with an UPDATE. The test only required enough dead TIDs for two
rounds of index vacuuming. This can be accomplished with a DELETE
instead of an UPDATE -- which generates about 50% less WAL and makes the
test 20% faster in many cases. The test takes several seconds (more on
slow buildfarm animals) because we need quite a few tuples to trigger
two rounds of index vacuuming; so it is worth a follow-on commit to
speed it up.
Suggested-by: Masahiko Sawada
Discussion: https://postgr.es/m/CAAKRu_bWmMjmqL%2BOZ2duEQ80u7cRvpsExLNZNjzk-pXX5skwMQ%40mail.gmail.com
Backpatch-through: 14, the first version containing this test.
| -rw-r--r-- | src/test/recovery/t/043_vacuum_horizon_floor.pl | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/test/recovery/t/043_vacuum_horizon_floor.pl b/src/test/recovery/t/043_vacuum_horizon_floor.pl index 0ad11c869f9..90141d365c0 100644 --- a/src/test/recovery/t/043_vacuum_horizon_floor.pl +++ b/src/test/recovery/t/043_vacuum_horizon_floor.pl @@ -75,7 +75,7 @@ $node_primary->safe_psql($test_db, qq[ CREATE TABLE ${table1}(col1 int) with (autovacuum_enabled=false); INSERT INTO $table1 SELECT generate_series(1, 200000); CREATE INDEX on ${table1}(col1); - UPDATE $table1 SET col1 = 0 WHERE col1 > 1; + DELETE FROM $table1 WHERE col1 > 1; INSERT INTO $table1 VALUES(1); ]); |