| From: | Leonardo Francalanci <m_lists(at)yahoo(dot)it> |
|---|---|
| To: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
| Cc: | Gianni Ciolli <gianni(dot)ciolli(at)2ndquadrant(dot)it>, pgsql-general <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: read-only UNLOGGED tables |
| Date: | 2011-03-31 12:55:57 |
| Message-ID: | 197205.40613.qm@web29003.mail.ird.yahoo.com |
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| Thread: | |
| Lists: | pgsql-general |
> Yes, but its more than fsync.
>
> You'd need to copy the whole table, all indexes and forks to WAL if
> wal_level is set high.
"if" wal_level is set high. If it's set to minimal it would be "simple" fsyncs,
right? I mean: if it's at minimal it wouldn't take long, and it basically won't
re-write any data. This would be very useful for data that it's not "that
important", but that at the same time can be made "persistent" if needed...
Am I wrong? (I'm not too familiar with WAL...)
Leonardo
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