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(parent: 178ccab) | patch
Tweak dynahash.c to avoid wasting memory space in non-shared hash tables.
authorTom Lane <tgl@sss.pgh.pa.us>
Sun, 25 Jun 2006 18:29:56 +0000 (18:29 +0000)
committerTom Lane <tgl@sss.pgh.pa.us>
Sun, 25 Jun 2006 18:29:56 +0000 (18:29 +0000)
commit07597c53010df6f6251f9dd86b8e98f8f19a37ba
treeab1602963d0719ad3a424a1827149a6ec4eaff4ftree
parent178ccab7246feba2b26bb003565661f708de341fcommit | diff
Tweak dynahash.c to avoid wasting memory space in non-shared hash tables.
palloc() will normally round allocation requests up to the next power of 2,
so make dynahash choose allocation sizes that are as close to a power of 2
as possible.
Back-patch to 8.1 --- the problem exists further back, but a much larger
patch would be needed and it doesn't seem worth taking any risks.
src/backend/utils/hash/dynahash.c diff | blob | blame | history
src/include/utils/hsearch.h diff | blob | blame | history
Bernd Helmle's repository