Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1UKZ6H-0008RK-3m for pgsql-performance@arkaria.postgresql.org; Tue, 26 Mar 2013 19:00:01 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.72) (envelope-from ) id 1UKZ6G-0004zr-Gq for pgsql-performance@arkaria.postgresql.org; Tue, 26 Mar 2013 19:00:00 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1UKZ6F-0004zl-Fz for pgsql-performance@postgresql.org; Tue, 26 Mar 2013 18:59:59 +0000 Received: from smtp2.peak6.com ([38.98.137.9]) by magus.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1UKZ6A-00086Q-8g for pgsql-performance@postgresql.org; Tue, 26 Mar 2013 18:59:58 +0000 X-AuditID: 0a02cb20-b7fa56d000007906-62-5151f0273758 Received: from sswchi5pcas1.peak6.net (Unknown_Domain [10.100.13.22]) by smtp2.peak6.com (Symantec Messaging Gateway) with SMTP id 46.39.30982.720F1515; Tue, 26 Mar 2013 13:59:51 -0500 (CDT) Received: from [10.10.201.64] (10.10.201.64) by sswchi5pcas1.peak6.net (10.100.13.25) with Microsoft SMTP Server (TLS) id 14.2.247.3; Tue, 26 Mar 2013 13:59:50 -0500 Message-ID: <5151F026.5010409@optionshouse.com> Date: Tue, 26 Mar 2013 13:59:50 -0500 From: Shaun Thomas Reply-To: Organization: Peak6 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130308 Thunderbird/17.0.4 MIME-Version: 1.0 To: Andrea Suisani CC: "pgsql-performance@postgresql.org" Subject: Re: [OT] linux 3.10 kernel will improve ipc,sysv semaphore scalability References: <51519CE9.1070409@opinioni.net> In-Reply-To: <51519CE9.1070409@opinioni.net> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed content-transfer-encoding: 7bit X-Originating-IP: [10.10.201.64] X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprAKsWRmVeSWpSXmKPExsXClcIrpqv+ITDQ4OI+eYvrM88xW/Qfa2Rx YPI4+v81q8eFfdPYA5iiGhhtEvPy8ksSS1IVUlKLk22V/AtKMvPzij3yS4tTFVwyi5NzEjNz U4uUFDJTbJWMlRQKchKTU3NT80pslRILClLzUpTsuBQwgA1QWWaeQmpecn5KZl66rZJnsL+u hYWppa6hkl08MkjoZMmY0HCdpWAia8XaCztZGhi7WboYOTkkBEwk3m47xA5hi0lcuLeerYuR i0NI4ACjxMm5z9ghnJWMEps3LWMCqeIV0JdYe+UDWDeLgKrE002XmEFsNgFdiUn9K9hAbCEB FYm+szfA6vkFhCX2fWgCqxEVCJPYe2EaG8QcQYmTM5+AzRER0JTY8+AyWJxZwFOi49QqRhBb WCBa4sTnPYwQM7Ulpk44CDaHU0BHovXpM3aIeluJC3Ous0DY8hLb385hhqhXlVjRPJEN4jMF if9X3jFNYBSZhWT1LCTts5C0L2BkXsUoXlyWmJyRaVZQnFtSYKRXkJqYbaaXl1qyiREU7Uyn FXYwbu6xOsQowMGoxMNbkBYQKMSaWFZcmXuIUYKDWUmEV3BjYKAQb0piZVVqUX58UWlOavEh Rh9gmE1klhJNzgcmorySeENjUwNTS1NDU3NTQyMcwkrivHs9gcYLpAPTT3ZqakFqEcw4Jg5O qQbGpBw240VG583DSiMsN6QGnHFeNV/sZG9/42mFS/eMtm0+8a5K3iA+523s4ZaiByrTlyow FDetu2X78MpW9SdrlJUflW38ZHPjYcmB5VLxR6dG7As8Wxi48cJi0c5z1Q/tefSVFOruTPyu sGCrbRSL4us3Zs8tdy0LlNrZPWsOn1Gyw/Nvbzk/K7EUZyQaajEXFScCAJhT3HMjAwAA X-Pg-Spam-Score: -1.9 (-) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-performance Precedence: bulk Sender: pgsql-performance-owner@postgresql.org On 03/26/2013 08:04 AM, Andrea Suisani wrote: > TPS: > 100 users: 1257.21 (vanilla) 2805.06 (v3 patchset) > 400 users: 1437.57 (vanilla) 2664.67 (v3 patchset) > 800 users: 1236.89 (vanilla) 2750.73 (v3 patchset) Wow, I like the look of that. I wonder how this reacts with disabled autogrouping and increasing sched_migration_cost. If the completely fair scheduler has less locking contention with this patch-set, those tweaks may not even be necessary. I need to see if I can find a system to test on. -- Shaun Thomas OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604 312-676-8870 sthomas@optionshouse.com ______________________________________________ See http://www.peak6.com/email_disclaimer/ for terms and conditions related to this email -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance