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| author | Teodor Sigaev <teodor@sigaev.ru> | 2005-06-27 12:45:23 +0000 |
|---|---|---|
| committer | Teodor Sigaev <teodor@sigaev.ru> | 2005-06-27 12:45:23 +0000 |
| commit | e8cab5fe49c45e9dc2990e36ecd6a42bf01dc4bc (patch) | |
| tree | b4950c8a1550ce26aa276a157b8680732ae3ac9b /src/backend/commands/variable.c | |
| parent | c3be085ab7a21e01f530357d962fa22f74a637ef (diff) | |
| download | postgresql-e8cab5fe49c45e9dc2990e36ecd6a42bf01dc4bc.tar.gz postgresql-e8cab5fe49c45e9dc2990e36ecd6a42bf01dc4bc.zip | |
Concurrency for GiST
- full concurrency for insert/update/select/vacuum:
- select and vacuum never locks more than one page simultaneously
- select (gettuple) hasn't any lock across it's calls
- insert never locks more than two page simultaneously:
- during search of leaf to insert it locks only one page
simultaneously
- while walk upward to the root it locked only parent (may be
non-direct parent) and child. One of them X-lock, another may
be S- or X-lock
- 'vacuum full' locks index
- improve gistgetmulti
- simplify XLOG records
Fix bug in index_beginscan_internal: LockRelation may clean
rd_aminfo structure, so move GET_REL_PROCEDURE after LockRelation
Diffstat (limited to 'src/backend/commands/variable.c')
0 files changed, 0 insertions, 0 deletions