X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by svr1.postgresql.org (Postfix) with ESMTP id 7A476D9F13 for ; Mon, 10 Oct 2005 19:15:24 -0300 (ADT) Received: from svr1.postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 10594-03 for ; Mon, 10 Oct 2005 22:15:21 +0000 (GMT) Received: from mail1.npci.com (mail.npcinternational.com [63.76.154.140]) by svr1.postgresql.org (Postfix) with ESMTP id 7B417D9F2A for ; Mon, 10 Oct 2005 19:15:22 -0300 (ADT) Received: from [172.16.10.91] ([172.16.10.91]) by mail1.npci.com (MOS 3.5.9-GR) with ESMTP id BTW00654 (AUTH via LOGINBEFORESMTP); Mon, 10 Oct 2005 17:09:58 -0500 (CDT) Message-ID: <434AE7FF.4000705@npcinternational.com> Date: Mon, 10 Oct 2005 17:15:27 -0500 From: Jon Brisbin User-Agent: Mozilla Thunderbird 1.0.5 (Windows/20050711) X-Accept-Language: en-us, en MIME-Version: 1.0 To: pgsql-performance@postgresql.org Subject: Re: Performance on SUSE w/ reiserfs References: <434ADD46.5060206@npcinternational.com> <6247.1128981289@sss.pgh.pa.us> In-Reply-To: <6247.1128981289@sss.pgh.pa.us> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.374 required=5 tests=[AWL=0.324, FORGED_RCVD_HELO=0.05] X-Spam-Level: X-Archive-Number: 200510/177 X-Sequence-Number: 14945 Tom Lane wrote: > > Are you sure it's not cached data pages, rather than cached inodes? > If so, the above behavior is *good*. > > People often have a mistaken notion that having near-zero free RAM means > they have a problem. In point of fact, that is the way it is supposed > to be (at least on Unix-like systems). This is just a reflection of the > kernel doing what it is supposed to do, which is to use all spare RAM > for caching recently accessed disk pages. If you're not swapping then > you do not have a problem. Except for the fact that my Java App server crashes when all the available memory is being used by caching and not reclaimed :-) If it wasn't for the app server going down, I probably wouldn't care. -- Jon Brisbin Webmaster NPC International, Inc.