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

help / color / mirror / Atom feed
From: Mark Kirkwood <mark.kirkwood@catalyst.net.nz>
To: Kevin Grittner <kgrittn@ymail.com>
To: Andres Freund <andres@2ndquadrant.com>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: 60 core performance with 9.3
Date: Thu, 17 Jul 2014 12:09:13 +1200
Message-ID: <53C71429.3000107@catalyst.net.nz> (raw)
In-Reply-To: <1405084749.26978.YahooMailNeo@web122306.mail.ne1.yahoo.com>
References: <53ACB190.2030206@catalyst.net.nz>
	<CAOR=d=3=Y6yNtwQenwVBGe6ZgjAeA8PwgYb3=aQEKn+vYWhBJA@mail.gmail.com>
	<53ACD6C4.9050605@catalyst.net.nz>
	<20140627091951.GA16680@awork2.anarazel.de>
	<53B283F3.7020005@catalyst.net.nz>
	<20140701101307.GO21422@awork2.anarazel.de>
	<53BF326F.2070903@catalyst.net.nz>
	<20140711082207.GI17261@awork2.anarazel.de>
	<53BFA63C.60909@catalyst.net.nz>
	<1405084749.26978.YahooMailNeo@web122306.mail.ne1.yahoo.com>
List-Unsubscribe:  <mailto:majordomo@postgresql.org?body=unsub%20pgsql-performance>

On 12/07/14 01:19, Kevin Grittner wrote:
>
> It might be worth a test using a cpuset to interleave OS cache and
> the NUMA patch I submitted to the current CF to see whether this is
> getting into territory where the patch makes a bigger difference.
> I would expect it to do much better than using numactl --interleave
> because work_mem and other process-local memory would be allocated
> in "near" memory for each process.
>
> http://www.postgresql.org/message-id/1402267501.41111.YahooMailNeo@web122304.mail.ne1.yahoo.com
>

Thanks Kevin - I did try this out - seemed slightly better than using 
--interleave, but almost identical to the results posted previously.

However looking at my postgres binary with ldd, I'm not seeing any link 
to libnuma (despite it demanding the library whilst building), so I 
wonder if my package build has somehow vanilla-ified the result :-(

Also I am guessing that with 60 cores I do:

$ sudo /bin/bash -c "echo 0-59 >/dev/cpuset/postgres/cpus"

i.e cpus are cores not packages...? If I've stuffed it up I'll redo!


Cheers

Mark


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



view thread (26+ messages)  latest in thread

Message-ID: <53C71429.3000107@catalyst.net.nz>
Permalink:  ../53C71429.3000107@catalyst.net.nz/
Also on:    postgresql.org/message-id/53C71429.3000107@catalyst.net.nz

 · 

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-performance@postgresql.org
  Cc: mark.kirkwood@catalyst.net.nz, kgrittn@ymail.com, andres@2ndquadrant.com
  Subject: Re: 60 core performance with 9.3
  In-Reply-To: <53C71429.3000107@catalyst.net.nz>

* 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