Re: [WIP] Zipfian distribution in pgbench

From: Peter Geoghegan <pg(at)bowt(dot)ie>
To: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
Cc: Alik Khilazhev <a(dot)khilazhev(at)postgrespro(dot)ru>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [WIP] Zipfian distribution in pgbench
Date: 2017-07-12 21:20:43
Message-ID: CAH2-Wzmsg4GWcNzUWqO6v8XmuHcznBR2q32wQLqnSzMKcP2onw@mail.gmail.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

On Wed, Jul 12, 2017 at 2:17 PM, Peter Geoghegan <pg(at)bowt(dot)ie> wrote:
> I'd be interested in seeing the difference it makes if Postgres is
> built with the call to _bt_check_unique() commented out within
> nbtinsert.c.

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)
{
...
}

--
Peter Geoghegan

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Thomas Munro 2017-07-12 21:45:51 Re: Causal reads take II
Previous Message Peter Geoghegan 2017-07-12 21:17:23 Re: [WIP] Zipfian distribution in pgbench