Use DELETE instead of UPDATE to speed up vacuum test
e2e992820f104def 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.
Branch
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REL_15_STABLE
Details
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https://git.postgresql.org/pg/commitdiff/9744fe24118ba5738dda9008533ed00227f5d069
Modified Files
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src/test/recovery/t/043_vacuum_horizon_floor.pl | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
