Re: reltuples after vacuum and analyze
От | Litao Wu |
---|---|
Тема | Re: reltuples after vacuum and analyze |
Дата | |
Msg-id | 20050125184116.1348.qmail@web30303.mail.mud.yahoo.com обсуждение исходный текст |
Ответ на | Re: reltuples after vacuum and analyze (Tom Lane <tgl@sss.pgh.pa.us>) |
Список | pgsql-performance |
I know it is accurate. My question is why the table takes 2023024KB after analyzed? And why it does not shink to 30088 after vacuumed? I know "vacuum full verbose" will force it shrink to reasonable size. But I do not understand why "analyze" bloats the table size so big?? Please note all above commands are done within minutes and I truely do not believe the table of 189165 rows takes that much space. Furthermore, I notice last weekly "vacuum full" even did not reclaim the space back. Thanks, --- Tom Lane <tgl@sss.pgh.pa.us> wrote: > Litao Wu <litaowu@yahoo.com> writes: > > Then how to explain relpages > > (size_kb in result returned)? > > relpages should be accurate in either case, since we > get that by asking > the kernel (lseek). > > regards, tom lane > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
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