Re: Overhead cost of Serializable Snapshot Isolation

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@endpoint.com
End Point Corporation
PGP Key: 0x14964AC8