From: | Greg Sabino Mullane <greg(at)endpoint(dot)com> |
---|---|
To: | Bruce Momjian <bruce(at)momjian(dot)us> |
Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Overhead cost of Serializable Snapshot Isolation |
Date: | 2011-10-11 20:39:26 |
Message-ID: | 20111011203926.GQ3007@tinybird.home |
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Lists: | pgsql-hackers |
On Tue, Oct 11, 2011 at 04:32:45PM -0400, Bruce Momjian wrote:
...
> Simon seems to value backward-compatibility more than the average
> hackers poster. The lack of complaints about 9.1 I think means that the
> hackers decision of _not_ providing a swich was the right one.
I wouldn't go that far: 9.1 is very new. Certainly the release notes do
not explain the change enough: part of the reason I wrote:
http://blog.endpoint.com/2011/09/postgresql-allows-for-different.html
Simon has a point, but I think that having applications switch from
serializable to repeatable read is a pain point people should
pay when going to 9.1, rather than adding some switch now.
--
Greg Sabino Mullane greg(at)endpoint(dot)com
End Point Corporation
PGP Key: 0x14964AC8
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