Re: pgbench - add pseudo-random permutation function

Michael Paquier <michael@paquier.xyz>

From: Michael Paquier <michael@paquier.xyz>

To: Fabien COELHO <coelho@cri.ensmp.fr>

Cc: Thomas Munro <thomas.munro@enterprisedb.com>, hironobu@interdb.jp, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>

Date: 2018-10-01T06:40:04Z

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 →

pgbench: Function to generate random permutations.
- 6b258e3d688d 14.0 landed
Add basic support for using the POPCNT and SSE4.2s LZCNT opcodes
- 711bab1e4d19 12.0 cited
Further improve code for probing the availability of ARM CRC instructions.
- a7a7387575b8 11.0 cited

On Wed, Sep 26, 2018 at 01:20:49PM +0200, Fabien COELHO wrote:
> So, am I right to deducing that you are satisfied with the current status of
> the patch, with the nbits implementation either based on popcount (v4) or
> clz (v5) compiler intrinsics? I think that the clz option is better.

Fabien, please note that v5 does not apply, so I moved this patch to
next CF, waiting on author.
--
Michael