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| author | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2007-04-16 18:30:04 +0000 |
|---|---|---|
| committer | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2007-04-16 18:30:04 +0000 |
| commit | e2a186b03cc1a87cf26644db18f28a20f10bd739 (patch) | |
| tree | a11e944e89e9757808f6d86dc9aa79ea6a94948a /src/backend/executor/nodeLimit.c | |
| parent | 42dc4b66e61cde4beb466561f12fd490b6621ee3 (diff) | |
| download | postgresql-e2a186b03cc1a87cf26644db18f28a20f10bd739.tar.gz postgresql-e2a186b03cc1a87cf26644db18f28a20f10bd739.zip | |
Add a multi-worker capability to autovacuum. This allows multiple worker
processes to be running simultaneously. Also, now autovacuum processes do not
count towards the max_connections limit; they are counted separately from
regular processes, and are limited by the new GUC variable
autovacuum_max_workers.
The launcher now has intelligence to launch workers on each database every
autovacuum_naptime seconds, limited only on the max amount of worker slots
available.
Also, the global worker I/O utilization is limited by the vacuum cost-based
delay feature. Workers are "balanced" so that the total I/O consumption does
not exceed the established limit. This part of the patch was contributed by
ITAGAKI Takahiro.
Per discussion.
Diffstat (limited to 'src/backend/executor/nodeLimit.c')
0 files changed, 0 insertions, 0 deletions