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04-11-2008, 02:32 AM
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 Re: Huge memory consumption during vacuum (v.8.0) On Sun, 30 Jan 2005, Tom Lane wrote: > Oleg Bartunov <oleg@sai.msu.su> writes: >> On Sun, 30 Jan 2005, Tom Lane wrote: >>> I'm confused. The log trace you showed us before appeared to be from >>> a non-FULL vacuum, but here you're saying it's VACUUM FULL. Which is >>> it ... or did you change? > >> Yes, first time I tried vacuum from withing psql, next time I decided >> to run vacuumdb and seems changed option. > > Um. Well, a VACUUM FULL is going to build in-memory data structures > that represent *all* of the usable free space in a table. I don't > actually think that VACUUM FULL is useful on an enormous table ... you > want to keep after it with routine plain VACUUMs, instead. ok. I'll try without FULL, but if memory does not fail me postmaster was also greedy. Let's see > > Another possibility is to use CLUSTER or a rewriting ALTER TABLE to > shrink the space, but be aware that this requires a transient second > copy of the table and indexes. > > regards, tom lane > Regards, Oleg __________________________________________________ ___________ Oleg Bartunov, sci.researcher, hostmaster of AstroNet, Sternberg Astronomical Institute, Moscow University (Russia) Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/ phone: +007(095)939-16-83, +007(095)939-23-83 ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq      |
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