Horton

Re: [WIP] Zipfian distribution in pgbench

Peter Geoghegan <pg@bowt.ie>

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From: Peter Geoghegan <pg@bowt.ie>
To: Alvaro Herrera <alvherre@2ndquadrant.com>
Cc: Alik Khilazhev <a.khilazhev@postgrespro.ru>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Date: 2017-07-12T21:20:43Z
Lists: pgsql-hackers 
On Wed, Jul 12, 2017 at 2:17 PM, Peter Geoghegan <pg@bowt.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

Commits

  1. Add approximated Zipfian-distributed random generator to pgbench.