Received: from localhost (mx1.hub.org [200.46.208.251]) by postgresql.org (Postfix) with ESMTP id 940069FA502 for ; Mon, 25 Sep 2006 11:58:26 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.208.251]) (amavisd-new, port 10024) with ESMTP id 03481-09 for ; Mon, 25 Sep 2006 11:58:20 -0300 (ADT) X-Greylist: domain auto-whitelisted by SQLgrey- Received: from web35811.mail.mud.yahoo.com (web35811.mail.mud.yahoo.com [66.163.179.180]) by postgresql.org (Postfix) with SMTP id CC09F9FA463 for ; Mon, 25 Sep 2006 11:58:19 -0300 (ADT) Received: (qmail 74845 invoked by uid 60001); 25 Sep 2006 14:58:18 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=1dKV3hPKP/sThisNkNjppOIBb1sUnPCU5If9H8IO8d3wmuUMFIvK5XgUnIuVVMyi1+/wOtRVa1RY+PHHw9mW8O3NqQYHNJgNcuAWt7xE7yinlfUgogX2CDoPBX7TmfSyxPgdMn/2CIKjXuI9K6e9wSMFZWFJiSU6PR+lDAchlCg= ; Message-ID: <20060925145817.74843.qmail@web35811.mail.mud.yahoo.com> Received: from [194.29.36.33] by web35811.mail.mud.yahoo.com via HTTP; Mon, 25 Sep 2006 07:58:17 PDT Date: Mon, 25 Sep 2006 07:58:17 -0700 (PDT) From: yoav x Subject: Re: PostgreSQL and sql-bench To: pgsql-performance@postgresql.org In-Reply-To: <829.1158851565@sss.pgh.pa.us> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=2.566 tagged_above=0 required=5 tests=AWL, DNS_FROM_RFC_ABUSE, DNS_FROM_RFC_POST, DNS_FROM_RFC_WHOIS X-Spam-Level: ** X-Archive-Number: 200609/329 X-Sequence-Number: 21015 Hi I am not comparing Postgres to MyISAM (obviously it is not a very fair comparison) and we do need ACID, so all comparison are made against InnoDB (which now supports MVCC as well). I will try again with the suggestions posted here. Thanks. --- Tom Lane wrote: > yoav x writes: > > I've applied the following parameters to postgres.conf: > > > max_connections = 500 > > shared_buffers = 3000 > > work_mem = 100000 > > effective_cache_size = 3000000000 > > Please see my earlier reply --- you ignored at least > checkpoint_segments, which is critical, and perhaps other things. > > Don't forget also that testing mysql/myisam against fsync = on > is inherently unfair. > > regards, tom lane > > ---------------------------(end of broadcast)--------------------------- > TIP 6: explain analyze is your friend > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com