Include chunk overhead in hash table entry size estimate.
Don't try to be precise about it, just use a constant 16 bytes of
chunk overhead. Being smarter would require knowing the memory context
where the chunk will be allocated, which is not known by all callers.
Discussion: https://postgr.es/m/20200325220936.il3ni2fj2j2b45y5@alap3.anarazel.de
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/0588ee63aa2d8c5765d086991555cd9acdd4d86f
Modified Files
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src/backend/executor/nodeAgg.c | 36 ++++++++++++++++++++++++++++++------
src/include/executor/nodeAgg.h | 2 +-
2 files changed, 31 insertions(+), 7 deletions(-)