Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1Xgi1M-0002dp-R2 for pgsql-performance@arkaria.postgresql.org; Tue, 21 Oct 2014 22:35:16 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1Xgi1M-0006HL-AN for pgsql-performance@arkaria.postgresql.org; Tue, 21 Oct 2014 22:35:16 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1Xgi1K-0006Do-RQ for pgsql-performance@postgresql.org; Tue, 21 Oct 2014 22:35:14 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by makus.postgresql.org with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1Xgi1I-00029c-3l for pgsql-performance@postgresql.org; Tue, 21 Oct 2014 22:35:13 +0000 Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1]) by sss.pgh.pa.us (8.14.4/8.14.4) with ESMTP id s9LMZAsB015198; Tue, 21 Oct 2014 18:35:10 -0400 From: Tom Lane To: Montana Low cc: pgsql-performance@postgresql.org Subject: Re: ERROR: out of memory | with 23GB cached 7GB reserved on 30GB machine In-reply-to: References: Comments: In-reply-to Montana Low message dated "Tue, 21 Oct 2014 15:25:01 -0700" Date: Tue, 21 Oct 2014 18:35:10 -0400 Message-ID: <15197.1413930910@sss.pgh.pa.us> X-Pg-Spam-Score: -3.3 (---) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-performance Precedence: bulk Sender: pgsql-performance-owner@postgresql.org Montana Low writes: > I'm running postgres-9.3 on a 30GB ec2 xen instance w/ linux kernel 3.16.3. > I receive numerous Error: out of memory messages in the log, which are > aborting client requests, even though there appears to be 23GB available in > the OS cache. Perhaps the postmaster is being started with a ulimit setting that restricts process size? regards, tom lane -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance