Re: Hot Standby and VACUUM FULL
От | Simon Riggs |
---|---|
Тема | Re: Hot Standby and VACUUM FULL |
Дата | |
Msg-id | 1265039882.13782.12413.camel@ebony обсуждение исходный текст |
Ответ на | Re: Hot Standby and VACUUM FULL (Tom Lane <tgl@sss.pgh.pa.us>) |
Список | pgsql-hackers |
On Mon, 2010-02-01 at 10:27 -0500, Tom Lane wrote: > Simon Riggs <simon@2ndQuadrant.com> writes: > > On Mon, 2010-02-01 at 10:06 -0500, Tom Lane wrote: > >> the assumption that the file is less than one disk block, > >> it should be just as atomic as pg_control updates are. > > > IIRC there were 173 relations affected by this. 4 bytes each we would > > have more than 512 bytes. > > Where in the world did you get that number? > > There are currently 29 shared relations (counting indexes), and 13 > nailed local relations, which would go into a different map file. > I'm not sure if the set of local catalogs requiring the map treatment > is exactly the same as what's presently nailed, but that's probably > a good approximation. I was suggesting that we only do shared and nailed relations. Sounds like you agree. -- Simon Riggs www.2ndQuadrant.com
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