X-Original-To: pgsql-performance-postgresql.org@postgresql.org Received: from localhost (wm.hub.org [200.46.204.128]) by postgresql.org (Postfix) with ESMTP id C95469FB26B for ; Tue, 8 Aug 2006 07:40:24 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.128]) (amavisd-new, port 10024) with ESMTP id 73141-08 for ; Tue, 8 Aug 2006 10:40:16 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey- Received: from mail.rentalia.net (mail.rentalia.com [213.192.209.8]) by postgresql.org (Postfix) with ESMTP id 4423B9FB221 for ; Tue, 8 Aug 2006 07:40:15 -0300 (ADT) Received: (qmail 10514 invoked by uid 514); 8 Aug 2006 12:40:13 +0200 Received: from 62.37.216.88 by rigodon (envelope-from , uid 512) with qmail-scanner-1.25-st-qms (clamdscan: 0.88/1284. spamassassin: 3.0.2. perlscan: 1.25-st-qms. Clear:RC:0(62.37.216.88):SA:0(-2.3/5.0):. Processed in 3.814009 secs); 08 Aug 2006 10:40:13 -0000 X-Antivirus-MYDOMAIN-Mail-From: ruben@rentalia.com via rigodon X-Antivirus-MYDOMAIN: 1.25-st-qms (Clear:RC:0(62.37.216.88):SA:0(-2.3/5.0):. Processed in 3.814009 secs Process 10496) Received: from 62-37-216-88.mad1.adsl.uni2.es (HELO ?192.168.2.28?) (ruben@rentalia.com@62.37.216.88) by mail.rentalia.net with SMTP; 8 Aug 2006 12:40:09 +0200 Message-ID: <44D86A00.90106@rentalia.com> Date: Tue, 08 Aug 2006 12:40:00 +0200 From: Ruben Rubio User-Agent: Thunderbird 1.5.0.5 (X11/20060728) MIME-Version: 1.0 To: pgsql-performance@postgresql.org Subject: shared_buffer optimization X-Enigmail-Version: 0.94.0.0 Content-Type: text/plain; charset=koi8-r Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0.135 tagged_above=0 required=5 tests=FORGED_RCVD_HELO X-Spam-Level: X-Archive-Number: 200608/96 X-Sequence-Number: 20281 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I have a question with shared_buffer. Ok, I have a server with 4GB of RAM - ----- # cat /proc/meminfo MemTotal: 4086484 kB [...] - ----- So, if I want to, for example, shared_buffer to take 3 GB of RAM then shared_buffer would be 393216 (3 * 1024 * 1024 / 8) Postmaster dont start. Error: FATAL: shmat(id=360448) failed: Invalid argument I can set a less value, but not higher than 3 GB. Am I doing something wrong? Any idea? -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFE2GoAIo1XmbAXRboRAtPgAJ9HN7aL0lyFtyTZnOoIAJXmGNsomgCeI1ex II1MclZaaIjg/ryH08wCuAY= =cgwJ -----END PGP SIGNATURE-----