Re: Per-column collation, the finale

Bruce Momjian <bruce@momjian.us>

From: Bruce Momjian <bruce@momjian.us>
To: Noah Misch <noah@leadboat.com>
Cc: Peter Eisentraut <peter_e@gmx.net>, pgsql-hackers@postgresql.org
Date: 2011-02-04T21:24:19Z
Lists: pgsql-hackers
Noah Misch wrote:
> On Thu, Feb 03, 2011 at 05:53:28PM +0200, Peter Eisentraut wrote:
> > On tor, 2011-02-03 at 00:10 -0500, Noah Misch wrote:
> > > > This is good stuff.  I'll send you a new patch in a day or three for
> > > > perhaps another round of performance tests.  Some of the other
> > > issues
> > > > above can perhaps be postponed for follow-up patches.
> > > 
> > > I agree -- if the performance-when-unused gets solid, none of my other
> > > comments ought to hold things up. 
> > 
> > Here is a new patch.
> > 
> > The main change is in varstr_cmp(), avoiding the calls to
> > pg_newlocale_from_collation() when the default locale is used.  This
> > accounts for the performance regression in my tests.  It also addresses
> > some of your refactoring ideas.
> 
> Looks good and tests well.  I've attached the same benchmark script with updated
> timings, and I've marked the patch Ready for Committer.

Nice to see that performance hit is removed now!

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +