| From: | Michael Paquier <michael(at)paquier(dot)xyz> |
|---|---|
| To: | Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Christoph Berg <myon(at)debian(dot)org>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>, Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com> |
| Subject: | Re: pgbench test failing on 14beta1 on Debian/i386 |
| Date: | 2021-05-19 07:27:54 |
| Message-ID: | YKS9+rPdGUGGEX+E@paquier.xyz |
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| Lists: | pgsql-hackers |
On Wed, May 19, 2021 at 09:06:16AM +0200, Fabien COELHO wrote:
> I see two simple approaches:
>
> (1) use another PRNG inside pgbench, eg Knuth's which was used in some
> previous submission and is very simple and IMHO better than the rand48
> stuff.
>
> (2) extend pg_*rand48() to provide an unsigned 64 bits out of the 48 bits
> state.
Or, (3) remove this test? I am not quite sure what there is to gain
with this extra test considering all the other tests with permute()
already present in this script.
--
Michael
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