Received: from localhost (unknown [200.46.208.211]) by mail.postgresql.org (Postfix) with ESMTP id 7E888633D82 for ; Thu, 14 Jan 2010 16:19:34 -0400 (AST) Received: from mail.postgresql.org ([200.46.204.86]) by localhost (mx1.hub.org [200.46.208.211]) (amavisd-maia, port 10024) with ESMTP id 65538-08 for ; Thu, 14 Jan 2010 20:19:20 +0000 (UTC) X-Greylist: delayed 00:05:00.036972 by SQLgrey-1.7.6 Received: from fg-out-1718.google.com (fg-out-1718.google.com [72.14.220.156]) by mail.postgresql.org (Postfix) with ESMTP id 07C64632D2C for ; Thu, 14 Jan 2010 16:19:22 -0400 (AST) Received: by fg-out-1718.google.com with SMTP id e21so415600fga.1 for ; Thu, 14 Jan 2010 12:19:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:received:received:received:date:from:to:cc :subject:message-id:references:mime-version:content-type :content-disposition:in-reply-to:user-agent; bh=4dzK450/UMDGA0KCIK4yfJEEri5uyHXmkUyD0hxr0IY=; b=we5CdmJjQR6ufiXvOX01s2isL+nLoft/pyKIcjJW/GfuLVYUnjw7vMHuYVyJJFWVl4 DgDlYNtTvwpJLFc3VFfz3eqDNLQ8wvwwmO7LkhFQYpykBRECcUHiZVqCSNG7Bjjkxikr h0ExFuSfvhrI3hJAt4AvzLBenkclIS7GOLyM4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; b=KfjpC084xk1rc0PjEMt5TEEiq0vh1VO5jVwJLpXYq1RyevJkhP/AGmJM6O49rldvrE MlCuyuXmW06oqVJbo7qAPh+xBHXUTRJDlB1WoNT9wFiZxrmhsVsf2fFrY8IQ4KCuoLlX S4mh8i6HMH+hrXPw1zkL1bYgR7Xep+kTWkZCk= Received: by 10.86.126.35 with SMTP id y35mr1636784fgc.75.1263500060211; Thu, 14 Jan 2010 12:14:20 -0800 (PST) Received: from googlemail.com (port-87-193-148-114.static.qsc.de [87.193.148.114]) by mx.google.com with ESMTPS id 14sm462110fxm.7.2010.01.14.12.14.18 (version=TLSv1/SSLv3 cipher=RC4-MD5); Thu, 14 Jan 2010 12:14:18 -0800 (PST) Received: by googlemail.com (nbSMTP-1.00) for uid 1100 (using TLSv1/SSLv3 with cipher RC4-MD5 (128/128 bits)) fkater@googlemail.com; Thu, 14 Jan 2010 21:14:18 +0100 (CET) Date: Thu, 14 Jan 2010 21:14:17 +0100 From: "fkater@googlemail.com" To: Hannu Krosing Cc: pgsql-performance@postgresql.org Subject: Re: Inserting 8MB bytea: just 25% of disk perf used? Message-ID: <20100114201417.GB2384@comppasch2> References: <20100114142903.GB2973@comppasch2> <1263481236.2110.12.camel@hvost> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <1263481236.2110.12.camel@hvost> User-Agent: Mutt/1.5.20 (2009-06-14) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-2.599 tagged_above=-10 required=5 tests=BAYES_00=-2.599 X-Spam-Level: X-Archive-Number: 201001/307 X-Sequence-Number: 37187 Thanks a lot for your reply. Hannu Krosing: > > 4 Core CPU 3 Ghz, WinXP, 1 TB SATA disk. > > try inserting the same data using 4 parallel connections or even 8 > parallel ones. Interesting idea -- I forgot to mention though that 2-3 cores will be occupied soon with other tasks. Felix