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| author | John Naylor <john.naylor@postgresql.org> | 2024-08-06 20:38:33 +0700 |
|---|---|---|
| committer | John Naylor <john.naylor@postgresql.org> | 2024-08-10 14:52:56 +0700 |
| commit | bbf668d66fbf61d45f1c187b08a5f51537bfb7c7 (patch) | |
| tree | fbd601cfdf04291dbd407c28a18ac47ed970bf4a /src/backend/utils/misc/postgresql.conf.sample | |
| parent | f5a1311fccd2ed24a9fb42aa47a17d1df7126039 (diff) | |
| download | postgresql-bbf668d66fbf61d45f1c187b08a5f51537bfb7c7.tar.gz postgresql-bbf668d66fbf61d45f1c187b08a5f51537bfb7c7.zip | |
Lower minimum maintenance_work_mem to 64kB
Since the introduction of TID store, vacuum uses far less memory in
the common case than in versions 16 and earlier. Invoking multiple
rounds of index vacuuming in turn requires a much larger table. It'd
be a good idea anyway to cover this case in regression testing, and a
lower limit is less painful for slow buildfarm animals. The reason to
do it now is to re-enable coverage of the bugfix in commit 83c39a1f7f.
For consistency, give autovacuum_work_mem the same treatment.
Suggested by Andres Freund
Tested by Melanie Plageman
Backpatch to v17, where TID store was introduced
Discussion: https://postgr.es/m/20240516205458.ohvlzis5b5tvejru@awork3.anarazel.de
Discussion: https://postgr.es/m/20240722164745.fvaoh6g6zprisqgp%40awork3.anarazel.de
Diffstat (limited to 'src/backend/utils/misc/postgresql.conf.sample')
| -rw-r--r-- | src/backend/utils/misc/postgresql.conf.sample | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample index 9ec9f97e926..667e0dc40a2 100644 --- a/src/backend/utils/misc/postgresql.conf.sample +++ b/src/backend/utils/misc/postgresql.conf.sample @@ -139,8 +139,8 @@ # you actively intend to use prepared transactions. #work_mem = 4MB # min 64kB #hash_mem_multiplier = 2.0 # 1-1000.0 multiplier on hash table work_mem -#maintenance_work_mem = 64MB # min 1MB -#autovacuum_work_mem = -1 # min 1MB, or -1 to use maintenance_work_mem +#maintenance_work_mem = 64MB # min 64kB +#autovacuum_work_mem = -1 # min 64kB, or -1 to use maintenance_work_mem #logical_decoding_work_mem = 64MB # min 64kB #max_stack_depth = 2MB # min 100kB #shared_memory_type = mmap # the default is the first option |