Horton

Re: pgbench - add pseudo-random permutation function

Fabien COELHO <coelho@cri.ensmp.fr>

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From: Fabien COELHO <coelho@cri.ensmp.fr>
To: Hironobu SUZUKI <hironobu@interdb.jp>
Cc: PostgreSQL Developers <pgsql-hackers@lists.postgresql.org>
Date: 2018-09-11T14:57:33Z
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. pgbench: Function to generate random permutations.

  2. Add basic support for using the POPCNT and SSE4.2s LZCNT opcodes

  3. Further improve code for probing the availability of ARM CRC instructions.

Hello Hironobu-san,

> I reviewed `pgbench-prp-func-1.patch` and found an incomplete implementation.

Indeed, thanks a lot for the debug, and the proposed fix!

I'm going to work a little bit more on the patch based on your proposed 
changes, and submit a v3, hopefully soon.

-- 
Fabien.