Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1aSrUj-0001If-FG for pgsql-hackers@arkaria.postgresql.org; Mon, 08 Feb 2016 19:29:09 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84) (envelope-from ) id 1aSrUj-0003Te-28 for pgsql-hackers@arkaria.postgresql.org; Mon, 08 Feb 2016 19:29:09 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84) (envelope-from ) id 1aSrUi-0003TY-LC for pgsql-hackers@postgresql.org; Mon, 08 Feb 2016 19:29:08 +0000 Received: from out.smtp-auth.no-ip.com ([8.23.224.60]) by magus.postgresql.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.84) (envelope-from ) id 1aSrUf-0001oc-1E for pgsql-hackers@postgresql.org; Mon, 08 Feb 2016 19:29:08 +0000 X-No-IP: alvh.no-ip.org@noip-smtp X-Report-Spam-To: abuse@no-ip.com Received: from alvin.alvh.no-ip.org (unknown [186.37.79.78]) (Authenticated sender: alvh.no-ip.org@noip-smtp) by smtp-auth.no-ip.com (Postfix) with ESMTPA id 9F475400E65; Mon, 8 Feb 2016 11:29:01 -0800 (PST) Received: by alvin.alvh.no-ip.org (Postfix, from userid 1000) id 9E12058C; Mon, 8 Feb 2016 20:28:57 +0100 (CET) Date: Mon, 8 Feb 2016 16:28:57 -0300 From: Alvaro Herrera To: Robert Haas Cc: Aleksander Alekseev , Anastasia Lubennikova , pgsql-hackers Subject: Re: Patch: fix lock contention for HASHHDR.mutex Message-ID: <20160208192857.GA316589@alvherre.pgsql> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) X-Pg-Spam-Score: -1.1 (-) 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 I've closed this as returned-with-feedback. Please resubmit once you have found answers to the questions posed; from the submitted benchmark numbers this looks very exciting, but it needs a bit more work. You don't necessarily have to agree with everything Robert says, but you need to have well reasoned explanations for the points where you disagree. Thanks, -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers