From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from userp1040.oracle.com ([156.151.31.81]:25225 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753237AbbINP2g (ORCPT ); Mon, 14 Sep 2015 11:28:36 -0400 Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by userp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id t8EFSaYT013976 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Mon, 14 Sep 2015 15:28:36 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userv0022.oracle.com (8.13.8/8.13.8) with ESMTP id t8EFSZLx025663 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL) for ; Mon, 14 Sep 2015 15:28:35 GMT Received: from abhmp0007.oracle.com (abhmp0007.oracle.com [141.146.116.13]) by aserv0121.oracle.com (8.13.8/8.13.8) with ESMTP id t8EFSZng022281 for ; Mon, 14 Sep 2015 15:28:35 GMT Date: Mon, 14 Sep 2015 23:28:21 +0800 From: Liu Bo To: linux-btrfs@vger.kernel.org Subject: Horrible dbench performance Message-ID: <20150914152820.GA25610@localhost.localdomain> Reply-To: bo.li.liu@oracle.com MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi, Both [1] and [2] had run dbench on btrfs with fast storage, and showed bad numbers, I got an impression that after refractoring btree lock to smart rwlock, we have mitigated this issue.. Not got a fast-enough ssd handy, does anyone confirm the result showed in those link? [1]:https://lkml.org/lkml/2015/4/29/793 [2]:https://lkml.org/lkml/2015/8/21/22 Thanks, -liubo