From: Marcus Larsson <kore@mindwipe.org>
To: Shaun Thomas <sthomas@optionshouse.com>
Cc: Claudio Freire <klaussfreire@gmail.com>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: Tons of free RAM. Can't make it go away.
Date: Mon, 22 Oct 2012 19:56:17 +0200
Message-ID: <20121022175617.GA11806@mindwipe.org> (raw)
In-Reply-To: <5085873D.60400@optionshouse.com>
References: <508583E4.8080102@optionshouse.com>
<CAGTBQpZA+_fL=D_E0F8jmpdTcTePgkSQGMFEtoWN7OyWuDnOeQ@mail.gmail.com>
<5085873D.60400@optionshouse.com>
On Mon, Oct 22, 2012 at 12:49:49PM -0500, Shaun Thomas wrote:
> Trust me, there's plenty. We have a DB that's 6x larger than RAM
> that's currently experiencing 6000TPS, and according to iostat,
> anywhere from 20-60% disk utilization that's mostly reads.
Could it be related to zone_reclaim_mode? What is vm.zone_reclaim_mode set to?
/marcus
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To: pgsql-performance@postgresql.org
Cc: kore@mindwipe.org, sthomas@optionshouse.com, klaussfreire@gmail.com
Subject: Re: Tons of free RAM. Can't make it go away.
In-Reply-To: <20121022175617.GA11806@mindwipe.org>
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