Re: Scaling PostgreSQL at multicore Power8

From: Andres Freund <andres(at)anarazel(dot)de>
To: Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Scaling PostgreSQL at multicore Power8
Date: 2015-08-31 15:48:50
Message-ID: 20150831154850.GZ31526@awork2.anarazel.de
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On 2015-08-31 17:43:08 +0200, Tomas Vondra wrote:
> Well, I could test the patch on a x86 machine with 4 sockets (64 cores), but
> I wonder whether it makes sense at this point, as the patch really is not
> correct (judging by what Andres says).

Additionally it's, for default pgbench, really mostly a bottlneck after
GetSnapshotData() is fixed. You can make it a problem much earlier if
you have index nested loops over a lot of rows.

- Andres

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