| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, hlinnaka <hlinnaka(at)iki(dot)fi>, boy <boy(at)atsc(dot)nl>, Pg Bugs <pgsql-bugs(at)postgresql(dot)org> |
| Subject: | Re: BUG #7521: Cannot disable WAL log while using pg_dump |
| Date: | 2012-09-06 21:08:11 |
| Message-ID: | CA+TgmoYZK+FXoV7p14=AcdowuFJefB6ZfF3H67NTvvW_ug=QHw@mail.gmail.com |
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| Lists: | pgsql-bugs pgsql-hackers |
On Thu, Sep 6, 2012 at 5:07 PM, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> wrote:
> How about secondary effects -- say pg_dump reads a lot of data into
> buffers that were previously dirty and those get evicted. Could page
> eviction cause lots of WAL to be emitted?
No. Simon's proposed checksum patch would have that effect, but currently no.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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