Horton

Re: A qsort template

Thomas Munro <thomas.munro@gmail.com>

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From: Thomas Munro <thomas.munro@gmail.com>
To: John Naylor <john.naylor@enterprisedb.com>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2021-08-02T00:42:54Z
Lists: pgsql-hackers 
On Mon, Aug 2, 2021 at 12:40 PM Thomas Munro <thomas.munro@gmail.com> wrote:
> Great!  I saw similar sorts of numbers.  It's really just a few
> crumbs, nothing compared to the gains David just found over in the
> thread "Use generation context to speed up tuplesorts", but on the
> bright side, these crumbs will be magnified by that work.

(Hmm, that also makes me wonder about using a smaller SortTuple when
possible...)

Commits

  1. Remove debug messages from tuplesort_sort_memtuples()

  2. Fix performance regression in tuplesort specializations

  3. Fix tuplesort optimization for CLUSTER-on-expression.

  4. Initial pgindent and pgperltidy run for v14.

  5. Specialize checkpointer sort functions.

  6. Use sort_template.h for qsort() and qsort_arg().

  7. Use sort_template.h for qsort_tuple() and qsort_ssup().

  8. Add sort_template.h for making sort functions.

  9. Use abbreviated keys for faster sorting of text datums.