Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752630AbbGIKgJ (ORCPT ); Thu, 9 Jul 2015 06:36:09 -0400 Received: from mout.gmx.net ([212.227.17.20]:50700 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751172AbbGIKf5 (ORCPT ); Thu, 9 Jul 2015 06:35:57 -0400 Message-ID: <1436438151.3477.75.camel@gmx.de> Subject: Re: Significant performance difference for postgres w/o sched_autogroup From: Mike Galbraith To: Andres Freund Cc: linux-kernel@vger.kernel.org, Ingo Molnar , Peter Zijlstra Date: Thu, 09 Jul 2015 12:35:51 +0200 In-Reply-To: <20150709092827.GW10242@alap3.anarazel.de> References: <20150708154550.GH340@alap3.anarazel.de> <1436409938.3477.31.camel@gmx.de> <20150709092827.GW10242@alap3.anarazel.de> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.12.11 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:JbXAQupcsoqgP0O49nFkNY34EJ1WP5CctofMJiGCbhmnTcHKQy1 nbHE2O0Mv7Hffd3JdZlx9RKdCCXsa4FcOaTQiMV3HjM9HjBY4zu/XDZOduL8EonJC6orhYp KTE0QtpUuPlNMHNILDa97aOBAjZYzU2CfIqp80KKUnrdGhd4fwzNW7wGhoKLN71uHsC5Oza gP6QDwkElyo1NL6CsysfQ== X-UI-Out-Filterresults: notjunk:1;V01:K0:8YhpftI8vMo=:pzipMwWf5z5Jy1zUk+VVdz 8XuLDxTY3oRvEJ+YazRE/abOPsl0qSoNUaLUmBWuZ7QLaZMefkBnlx3zG9brqt1QzddGSECtB JKGv1IBfA5pw8uaDoFaneJJt2OgzeGM8qo3Le/6F3tiyW0LHhY9kBh+RYE14/S7j+C+GWKgWr dmd/HvbENk98cXniqnLchGci9Ze6+sebiS9GBVHwcC1/LiCUX+T1VLlixwUE4duuCOODtA0ap BPg+/bsaiCSDRCRJ+nYpdC7ga0tR4Bs3DW0orkX6Vh1j6OycrPNnRrGO6a6sIEMSYX7DuhLFf V5Ya2iSLAaUwbZAIqe+E5z675+u/SeGPLuDqLNl9GGjHdgTCPywjiorZ+7TlvkAn+vfs2A259 mFzsSACp1eX2FxbP+GDgLewsKfcnOtHazMlan97C7i/fq/HUTdy95vZLbJXjJUnMwAhzB/TQ6 3mEAnNF/cHOdb5anM/05NMyHmleHEUbNq1IOylQ1q9yay1BK3AsduAckDgLzhH2NLdANN6xxW l1Jr6ifXAwABDXWI6Hefpx5DMYP7TrzZvpu2YgRoZT0zAdRdoDxTY86Lm+1STE+3GtgdwAQte KDeqFuG5B1mZJCU1S4rFaIDdgQqBDLpiPLV3y+wIfxfdT0nQxfAXJj0Oed+oq1CKRAYUQ1lnM UpkDpRNK8gLqs8Zlkm5XkunvLJ1YE2pk65y9axzO4r5gPp1KphbtleKiZalIlxj6TSZ4= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 584 Lines: 15 On Thu, 2015-07-09 at 11:28 +0200, Andres Freund wrote: > That'd make some sense if there were other stuff going on - but here the > same total budget in both cases leads to a 40% difference in throughput: When I suspect that what I'm hearing is horse pookey, I instrument the source and ask my silicon horse pookey detector :) -Mike -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/