| From: | pginfo <pginfo(at)t1(dot)unisoftbg(dot)com> |
|---|---|
| To: | "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org> |
| Subject: | slow vacuum performance |
| Date: | 2004-03-24 10:20:15 |
| Message-ID: | 406160DF.44D0988C@t1.unisoftbg.com |
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| Thread: | |
| Lists: | pgsql-performance |
Hi,
I am running pg 7.4.1 on linux box.
I have a midle size DB with many updates and after it I try to run
vacuum full analyze.
It takes about 2 h.
If I try to dump and reload the DB it take 20 min.
How can I improve the vacuum full analyze time?
My configuration:
shared_buffers = 15000 # min 16, at least max_connections*2,
8KB each
sort_mem = 10000 # min 64, size in KB
vacuum_mem = 32000 # min 1024, size in KB
effective_cache_size = 40000 # typically 8KB each
#max_fsm_pages = 20000 # min max_fsm_relations*16, 6 bytes each
#max_fsm_relations = 1000 # min 100, ~50 bytes each
regards,
ivan.
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