Date: Sun, 29 May 2016 01:40:52 -0400
From: Noah Misch <noah@leadboat.com>
To: robertmhaas@gmail.com
Cc: =?utf-8?B?0JLQsNGB0LjQu9GM0LXQsiDQlNC80LjRgtGA0LjQuQ==?=
 <d.vasilyev@postgrespro.ru>,
	pgsql-hackers@postgresql.org
Subject: Re: Performance degradation in commit ac1d794
Message-ID: <20160529054052.GA497229@tornado.leadboat.com>
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On Fri, Dec 25, 2015 at 08:08:15PM +0300, Васильев Дмитрий wrote:
> I suddenly found commit ac1d794 gives up to 3 times performance degradation.
> 
> I tried to run pgbench -s 1000 -j 48 -c 48 -S -M prepared on 70 CPU-core
> machine:
> commit ac1d794 gives me 363,474 tps
> and previous commit a05dc4d gives me 956,146
> and master( 3d0c50f ) with revert ac1d794 gives me 969,265

[This is a generic notification.]

The above-described topic is currently a PostgreSQL 9.6 open item.  Robert,
since you committed the patch believed to have created it, you own this open
item.  If some other commit is more relevant or if this does not belong as a
9.6 open item, please let us know.  Otherwise, please observe the policy on
open item ownership[1] and send a status update within 72 hours of this
message.  Include a date for your subsequent status update.  Testers may
discover new open items at any time, and I want to plan to get them all fixed
well in advance of shipping 9.6rc1.  Consequently, I will appreciate your
efforts toward speedy resolution.  Thanks.

[1] http://www.postgresql.org/message-id/20160527025039.GA447393@tornado.leadboat.com


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