Re: Change GUC hashtable to use simplehash?

John Naylor <johncnaylorls@gmail.com>

From: John Naylor <johncnaylorls@gmail.com>
To: "Anton A. Melnikov" <a.melnikov@postgrespro.ru>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Jeff Davis <pgsql@j-davis.com>, Ants Aasma <ants.aasma@cybertec.at>, Heikki Linnakangas <hlinnaka@iki.fi>, Junwang Zhao <zhjwpku@gmail.com>, jian he <jian.universality@gmail.com>, Andres Freund <andres@anarazel.de>, Gurjeet Singh <gurjeet@singh.im>, pgsql-hackers@postgresql.org
Date: 2025-01-29T07:02:59Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →
  1. Silence warning in older versions of Valgrind

  2. Revert "Speed up tail processing when hashing aligned C strings, take two"

  3. Speed up tail processing when hashing aligned C strings, take two

  4. Teach fasthash_accum to use platform endianness for bytewise loads

  5. Add macro to disable address safety instrumentation

  6. Convert uses of hash_string_pointer to fasthash equivalent

  7. Speed up tail processing when hashing aligned C strings

  8. Add helper functions for dshash tables with string keys.

  9. Fix warnings in cpluspluscheck

  10. Further cosmetic review of hashfn_unstable.h

  11. Simplify initialization of incremental hash state

  12. Add optimized C string hashing

  13. Add inline incremental hash functions for in-memory use

  14. Make all Perl warnings fatal

On Thu, Jan 23, 2025 at 8:52 AM Anton A. Melnikov
<a.melnikov@postgrespro.ru> wrote:
>
> Hi!
>
> On 22.01.2025 11:37, John Naylor wrote:
> > On Fri, Jan 17, 2025 at 4:50 PM John Naylor <johncnaylorls@gmail.com> wrote:
> >>
> >> It would be a lot more readable to revert the offending commit
> >> instead, since its predecessor had a much simpler bytewise loop.
>
> Agreed that reverting seems as a preferable way, and here's why.

This is done -- thanks for the report, and for testing.

-- 
John Naylor
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