Re: patch: improve SLRU replacement algorithm

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: patch: improve SLRU replacement algorithm
Date: 2012-04-05 12:30:51
Message-ID: CA+U5nM+A2dwe4dNME2fc6TFYrAv29V+t-W6JUQfB9VESmZeyeQ@mail.gmail.com
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On Thu, Apr 5, 2012 at 12:56 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:

> Overall tps, first without and then with patch:
>
> tps = 14546.644712 (including connections establishing)
> tps = 14550.515173 (including connections establishing)
>
> TPS graphs by second attached.

Again, I'm not that fussed about throughput because it just hides the
detail. I am concerned about the distribution of response times, so
I'd like to see the numbers about that if you don't mind. i.e. does
the patch remove long waits.

--
 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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