Re: Speeding up INSERTs and UPDATEs to partitioned tables
От | David Rowley |
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Тема | Re: Speeding up INSERTs and UPDATEs to partitioned tables |
Дата | |
Msg-id | CAKJS1f_OPRRhX-DJ=EqUvq1cnNQx_YJkojeK9dbHLnCgXmA3hQ@mail.gmail.com обсуждение исходный текст |
Ответ на | Speeding up INSERTs and UPDATEs to partitioned tables (David Rowley <david.rowley@2ndquadrant.com>) |
Ответы |
RE: Speeding up INSERTs and UPDATEs to partitioned tables
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Список | pgsql-hackers |
On 22 June 2018 at 18:28, David Rowley <david.rowley@2ndquadrant.com> wrote: > I've written fixes for items 1-6 above. > > I did: > > 1. Use an array instead of a List. > 2. Don't do this loop. palloc0() the partitions array instead. Let > UPDATE add whatever subplans exist to the zeroed array. > 3. Track what we initialize in a gapless array and cleanup just those > ones. Make this array small and increase it only when we need more > space. > 4. Only allocate the map array when we need to store a map. > 5. Work that out in relcache beforehand. > 6. ditto I've added this to the July 'fest: https://commitfest.postgresql.org/18/1690/ -- David Rowley http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
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