From mboxrd@z Thu Jan 1 00:00:00 1970 From: Howard Chu Subject: Re: mon switch from leveldb to rocksdb Date: Mon, 2 May 2016 20:00:44 +0100 Message-ID: <5727A3DC.7070102@symas.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from zill.ext.symas.net ([69.43.206.106]:34894 "EHLO zill.ext.symas.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755118AbcEBTSw (ORCPT ); Mon, 2 May 2016 15:18:52 -0400 In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Sage Weil , ceph-devel@vger.kernel.org Sage Weil wrote: > 1) Thoughts on moving to rocksdb in general? Are you actually prepared to undertake all of the measurement and tuning required to make RocksDB actually work well? You're switching from an (abandoned/unsupported) engine with only a handful of config parameters to one with ~40-50 params, all of which have critical but unpredictable impact on resource consumption and performance. -- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/