X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by postgresql.org (Postfix) with ESMTP id 2F8E311F6621 for ; Thu, 6 Apr 2006 10:30:38 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 57346-01 for ; Thu, 6 Apr 2006 10:30:28 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey- Received: from candle.pha.pa.us (candle.pha.pa.us [70.90.9.53]) by postgresql.org (Postfix) with ESMTP id 9B58911F61CE for ; Thu, 6 Apr 2006 10:30:31 -0300 (ADT) Received: (from pgman@localhost) by candle.pha.pa.us (8.11.6/8.11.6) id k36DUVG04472; Thu, 6 Apr 2006 09:30:31 -0400 (EDT) From: Bruce Momjian Message-Id: <200604061330.k36DUVG04472@candle.pha.pa.us> Subject: Re: Intel C/C++ Compiler Tests (fwd) In-Reply-To: <66602070604060345v3dbdd140w64f320897974f322@mail.gmail.com> To: PostgreSQL Performance Date: Thu, 6 Apr 2006 09:30:31 -0400 (EDT) X-Mailer: ELM [version 2.4ME+ PL121 (25)] MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, score=0.12 required=5 tests=[AWL=0.120] X-Spam-Score: 0.12 X-Spam-Level: X-Archive-Number: 200604/108 X-Sequence-Number: 18192 > > On 3/22/06 5:56 AM, "Spiegelberg, Greg" wrote: > > > > > Has anyone tested PostgreSQL 8.1.x compiled with Intel's Linux C/C++ > > > compiler? > > > > We used to compile 8.0 with icc and 7.x before that. We found very good > > performance gains for Intel P4 architecture processors and some gains for > > AMD Athlon. > > > > Lately, the gcc compilers have caught up with icc on pipelining > > optimizations and they generate better code for Opteron than icc, so we > > found that icc was significantly slower than gcc on Opteron and no > > different > > on P4/Xeon. > > > > Maybe things have changed in newer versions of icc, the last tests I did > > were about 1 year ago. EnterpriseDB is seeing the same thing, that gcc4 now has the same performance as icc, and is more flexible. -- Bruce Momjian http://candle.pha.pa.us + If your life is a hard drive, Christ can be your backup. +