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| author | Melanie Plageman | 2024-12-17 19:13:27 +0000 |
|---|---|---|
| committer | Melanie Plageman | 2024-12-17 19:19:13 +0000 |
| commit | dc6acfd910b868351f115382fd92f95e5345992c (patch) | |
| tree | ee13fc4a0559e9084131aea20eac4479ab6602de /src/backend/nodes/nodeFuncs.c | |
| parent | 4b565a198b524469df9f3286a6f12778acd9d564 (diff) | |
Count pages set all-visible and all-frozen in VM during vacuum
Heap vacuum already counts and logs pages with newly frozen tuples. Now
count and log the number of pages newly set all-visible and all-frozen
in the visibility map.
Pages that are all-visible but not all-frozen are debt for future
aggressive vacuums. The counts of newly all-visible and all-frozen pages
give us insight into the rate at which this debt is being accrued and
paid down.
Author: Melanie Plageman
Reviewed-by: Masahiko Sawada, Alastair Turner, Nitin Jadhav, Andres Freund, Bilal Yavuz, Tomas Vondra
Discussion: https://postgr.es/m/flat/CAAKRu_ZQe26xdvAqo4weHLR%3DivQ8J4xrSfDDD8uXnh-O-6P6Lg%40mail.gmail.com#6d8d2b4219394f774889509bf3bdc13d,
https://postgr.es/m/ctdjzroezaxmiyah3gwbwm67defsrwj2b5fpfs4ku6msfpxeia%40mwjyqlhwr2wu
Diffstat (limited to 'src/backend/nodes/nodeFuncs.c')
0 files changed, 0 insertions, 0 deletions