Re: [WIP] Zipfian distribution in pgbench

From: Alik Khilazhev <a(dot)khilazhev(at)postgrespro(dot)ru>
To: Peter Geoghegan <pg(at)bowt(dot)ie>
Cc: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [WIP] Zipfian distribution in pgbench
Date: 2017-07-13 11:38:26
Message-ID: D756E84D-3F9B-40B9-9899-A094A02E8A52@postgrespro.ru
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> On 13 Jul 2017, at 00:20, Peter Geoghegan <pg(at)bowt(dot)ie> wrote:
>
> Actually, I mean that I wonder how much of a difference it would make
> if this entire block was commented out within _bt_doinsert():
>
> if (checkUnique != UNIQUE_CHECK_NO)
> {
> …
> }
>
I am attaching results of test for 32 and 128 clients for original and patched(_bt_doinsert) variants.

Thanks and Regards,
Alik Khilazhev
Postgres Professional:
http://www.postgrespro.com <http://www.postgrespro.com/>
The Russian Postgres Company

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