Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1Uzpx7-0000bi-J0 for pgsql-hackers@arkaria.postgresql.org; Thu, 18 Jul 2013 15:17:09 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1Uzpx7-0000Rg-21 for pgsql-hackers@arkaria.postgresql.org; Thu, 18 Jul 2013 15:17:09 +0000 Received: from makus.postgresql.org ([2001:4800:7903:4::125]) by malur.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1Uzpx5-0000RZ-Km for pgsql-hackers@postgresql.org; Thu, 18 Jul 2013 15:17:07 +0000 Received: from moutng.kundenserver.de ([212.227.17.8]) by makus.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1Uzpx2-00057H-FR for pgsql-hackers@postgresql.org; Thu, 18 Jul 2013 15:17:07 +0000 Received: from [192.168.1.110] (mail.highperformancepostgresql.com [71.179.240.8]) by mrelayeu.kundenserver.de (node=mreu0) with ESMTP (Nemesis) id 0Lg4uF-1UL3oI2ymx-00pMVO; Thu, 18 Jul 2013 17:16:58 +0200 Message-ID: <51E806E8.1070309@2ndQuadrant.com> Date: Thu, 18 Jul 2013 11:16:56 -0400 From: Greg Smith User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:17.0) Gecko/20130620 Thunderbird/17.0.7 MIME-Version: 1.0 To: Amit Kapila CC: 'Ants Aasma' , 'Heikki Linnakangas' , 'PostgreSQL-development' , 'KONDO Mitsumasa' Subject: Re: Improvement of checkpoint IO scheduler for stable transaction responses References: <51B5AFB1.5030404@lab.ntt.co.jp> <51BDCB6C.1090507@vmware.com> <51E2F1C4.6010503@2ndQuadrant.com> <51e687de.ea06980a.04fe.332eSMTPIN_ADDED_BROKEN@mx.google.com> <005d01ce83a8$d8a6fd90$89f4f8b0$@kapila@huawei.com> In-Reply-To: <005d01ce83a8$d8a6fd90$89f4f8b0$@kapila@huawei.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Provags-ID: V02:K0:AnOY2m7nGTvYNabrMsIpVbJF934r4+rCTO0xi3ezsye 1ZkcJBX+J+DHj/4Q7AkEsHZ1uOEHLFYWTmJtFV+yQcJk6+J2GC N2858VcSQv3efIQUENKyexPZ+TbDTr+pTzvbX0QGMtYE+to9qD qoLjGyoruzFZxjRUNNA8tsnyYEluTJuk4G82o0yAB/+lG+9ir3 NNVuC/SFIYqQ7Ar9tiSEOamtcTZSMOlPQPpAntiTX2KCNU+Nof y7ddM4WtnfoH3gWj0SbGDC1woUowdnDlcMfIabH08GYhEnljm2 3X5LNwi4EzJRWMkQNBdZHI6S6FtmlQKwlV3yqwxHOesVK4CNXI pjdwB+5EbTCzbZEYbpe4= X-Pg-Spam-Score: -0.0 (/) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-hackers Precedence: bulk Sender: pgsql-hackers-owner@postgresql.org Please stop all this discussion of patents in this area. Bringing up a US patents here makes US list members more likely to be treated as willful infringers of that patent: http://www.ipwatchdog.com/patent/advanced-patent/willful-patent-infringement/ if the PostgreSQL code duplicates that method one day. The idea of surveying patents in some area so that their methods can be avoided in code you develop, that is a reasonable private stance to take. But don't do that on the lists. -- Greg Smith 2ndQuadrant US greg@2ndQuadrant.com Baltimore, MD PostgreSQL Training, Services, and 24x7 Support www.2ndQuadrant.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers