| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | Hannu Krosing <hannu(at)tm(dot)ee>, Hannu Krosing <hannu(at)krosing(dot)net>, Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp>, pgsql-hackers(at)postgresql(dot)org, jwbaker(at)acm(dot)org |
| Subject: | Re: LWLock contention: I think I understand the problem |
| Date: | 2002-01-23 19:15:21 |
| Message-ID: | 4665.1011813321@sss.pgh.pa.us |
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Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> If we have one page with data, and 100 empty pages, and another page
> with data on the end, will VACUUM shrink that to two pages if no one is
> accessing the table, or does it do _only_ intra-page moves.
The only way to shrink that is VACUUM FULL.
regards, tom lane
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