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 Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/dc6acfd910b868351f115382fd92f95e5345992c Modified Files -------------- src/backend/access/heap/vacuumlazy.c | 123 +++++++++++++++++++++++++++++++---- 1 file changed, 111 insertions(+), 12 deletions(-)
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