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* Asynchronous commit documentation gap
@ 2007-11-02 10:13 Florian Weimer <fweimer@bfk.de>
2007-11-04 09:05 ` Re: Asynchronous commit documentation gap Simon Riggs <simon@2ndquadrant.com>
2007-11-05 17:35 ` Re: [HACKERS] Asynchronous commit documentation gap Bruce Momjian <bruce@momjian.us>
0 siblings, 2 replies; 3+ messages in thread
From: Florian Weimer @ 2007-11-02 10:13 UTC (permalink / raw)
To: pgsql-hackers@postgresql.org
The documentation doesn't really tell how to disable synchronous
commits for a single commit. I believe the correct command is
SET LOCAL synchronous_commit TO OFF;
just before the COMMIT statement.
--
Florian Weimer <fweimer@bfk.de>
BFK edv-consulting GmbH http://www.bfk.de/
Kriegsstraße 100 tel: +49-721-96201-1
D-76133 Karlsruhe fax: +49-721-96201-99
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: Asynchronous commit documentation gap
2007-11-02 10:13 Asynchronous commit documentation gap Florian Weimer <fweimer@bfk.de>
@ 2007-11-04 09:05 ` Simon Riggs <simon@2ndquadrant.com>
1 sibling, 0 replies; 3+ messages in thread
From: Simon Riggs @ 2007-11-04 09:05 UTC (permalink / raw)
To: Florian Weimer <fweimer@bfk.de>; +Cc: pgsql-hackers@postgresql.org
On Fri, 2007-11-02 at 11:13 +0100, Florian Weimer wrote:
> The documentation doesn't really tell how to disable synchronous
> commits for a single commit. I believe the correct command is
>
> SET LOCAL synchronous_commit TO OFF;
>
> just before the COMMIT statement.
Yes, in fact anywhere within the transaction will do.
--
Simon Riggs
2ndQuadrant http://www.2ndQuadrant.com
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: [HACKERS] Asynchronous commit documentation gap
2007-11-02 10:13 Asynchronous commit documentation gap Florian Weimer <fweimer@bfk.de>
@ 2007-11-05 17:35 ` Bruce Momjian <bruce@momjian.us>
1 sibling, 0 replies; 3+ messages in thread
From: Bruce Momjian @ 2007-11-05 17:35 UTC (permalink / raw)
To: Florian Weimer <fweimer@bfk.de>; +Cc: pgsql-docs
Florian Weimer wrote:
> The documentation doesn't really tell how to disable synchronous
> commits for a single commit. I believe the correct command is
>
> SET LOCAL synchronous_commit TO OFF;
>
> just before the COMMIT statement.
Nice. I made the following documentation change, attached.
--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://postgres.enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +
Attachments:
/rtmp/diff (text/x-diff, 1.1K) download
Index: doc/src/sgml/config.sgml
===================================================================
RCS file: /cvsroot/pgsql/doc/src/sgml/config.sgml,v
retrieving revision 1.152
diff -c -c -r1.152 config.sgml
*** doc/src/sgml/config.sgml 1 Nov 2007 17:06:30 -0000 1.152
--- doc/src/sgml/config.sgml 5 Nov 2007 17:34:36 -0000
***************
*** 1318,1324 ****
In many situations, turning off <xref linkend="guc-synchronous-commit">
for noncritical transactions can provide much of the potential
performance benefit of turning off <varname>fsync</varname>, without
! the attendant risks of data corruption.
</para>
<para>
--- 1318,1326 ----
In many situations, turning off <xref linkend="guc-synchronous-commit">
for noncritical transactions can provide much of the potential
performance benefit of turning off <varname>fsync</varname>, without
! the attendant risks of data corruption. It can even be turned
! off in a single multi-statement transaction using <command>SET
! LOCAL synchronous_commit TO OFF;</>.
</para>
<para>
end of thread, other threads:[~2007-11-05 17:35 UTC | newest]
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2007-11-02 10:13 Asynchronous commit documentation gap Florian Weimer <fweimer@bfk.de>
2007-11-04 09:05 ` Simon Riggs <simon@2ndquadrant.com>
2007-11-05 17:35 ` Bruce Momjian <bruce@momjian.us>
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