pg.ddx.io  pgsql-hackers@postgresql.org mailing list archive  

help / color / mirror / Atom feed
From: Jesper Pedersen <jesper.pedersen@redhat.com>
To: Andres Freund <andres@anarazel.de>
Cc: Amit Kapila <amit.kapila16@gmail.com>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Subject: Re: Speed up Clog Access by increasing CLOG buffers
Date: Mon, 4 Apr 2016 11:25:56 -0400
Message-ID: <57028784.6050107@redhat.com> (raw)
In-Reply-To: <2F91B844-D053-4FC0-A43A-50659DB95719@anarazel.de>
References: <CAA4eK1+8=X9mSNeVeHg_NqMsOR-XKsjuqrYzQf=iCsdh3U4EOA@mail.gmail.com>
	<20150903114137.GE27649@awork2.anarazel.de>
	<CAA4eK1LMMGNQ439BUm0LcS3p0sb8S9kc-cUGU_ThNqMwA8_Tug@mail.gmail.com>
	<CAA4eK1+-=18HOrdqtLXqOMwZDbC_15WTyHiFruz7BvVArZPaAw@mail.gmail.com>
	<20160330230914.GH13305@awork2.anarazel.de>
	<56FD930A.1030005@redhat.com>
	<64AFABAF-8854-4877-BB79-16A845C62782@anarazel.de>
	<56FED94F.5050807@redhat.com>
	<2F91B844-D053-4FC0-A43A-50659DB95719@anarazel.de>
List-Unsubscribe: <mailto:majordomo@postgresql.org?body=unsub%20pgsql-hackers>

On 04/01/2016 04:39 PM, Andres Freund wrote:
> On April 1, 2016 10:25:51 PM GMT+02:00, Jesper Pedersen <jesper.pedersen@redhat.com> wrote:
>> Hi,
>>
>> On 03/31/2016 06:21 PM, Andres Freund wrote:
>>> On March 31, 2016 11:13:46 PM GMT+02:00, Jesper Pedersen
>> <jesper.pedersen@redhat.com> wrote:
>>>
>>>> I can do a USE_CONTENT_LOCK run on 0003 if it is something for 9.6.
>>>
>>> Yes please. I think the lock variant is realistic, the lockless did
>> isn't.
>>>
>>
>> I have done a run with -M prepared on unlogged running 10min per data
>> point, up to 300 connections. Using data + wal on HDD.
>>
>> I'm not seeing a difference between with and without USE_CONTENT_LOCK
>> --
>> all points are within +/- 0.5%.
>>
>> Let me know if there are other tests I can perform
>
> How do either compare to just 0002 applied?
>

0001 + 0002 compared to 0001 + 0002 + 0003 (either way) were pretty much 
the same +/- 0.5% on the HDD run.

Best regards,
  Jesper



-- 
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers



view thread (248+ messages)  latest in thread

Message-ID: <57028784.6050107@redhat.com>
Permalink:  ../57028784.6050107@redhat.com/
Also on:    postgresql.org/message-id/57028784.6050107@redhat.com

 · 

reply
Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: pgsql-hackers@postgresql.org
  Cc: jesper.pedersen@redhat.com, andres@anarazel.de, amit.kapila16@gmail.com
  Subject: Re: Speed up Clog Access by increasing CLOG buffers
  In-Reply-To: <57028784.6050107@redhat.com>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox