Re: high io BUT huge amount of free memory

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: sthomas(at)optionshouse(dot)com
Cc: Merlin Moncure <mmoncure(at)gmail(dot)com>, Миша Тюрин <tmihail(at)bk(dot)ru>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: high io BUT huge amount of free memory
Date: 2013-04-24 13:24:50
Message-ID: CA+TgmobbV25YxSMtOd1dvd4hOeGFUTRxK=m+JD+uiZvP3Jz9ZA@mail.gmail.com
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On Tue, Apr 23, 2013 at 10:50 AM, Shaun Thomas <sthomas(at)optionshouse(dot)com> wrote:
> This is most likely a NUMA issue. There really seems to be some kind of
> horrible flaw in the Linux kernel when it comes to properly handling NUMA on
> large memory systems.

Are you referring to the fact that vm.zone_reclaim_mode = 1 is an
idiotic default?

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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