Return-Path: X-Original-To: apmail-accumulo-notifications-archive@minotaur.apache.org Delivered-To: apmail-accumulo-notifications-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id BCE6A10CA7 for ; Mon, 28 Apr 2014 22:47:17 +0000 (UTC) Received: (qmail 9816 invoked by uid 500); 28 Apr 2014 22:47:16 -0000 Delivered-To: apmail-accumulo-notifications-archive@accumulo.apache.org Received: (qmail 9761 invoked by uid 500); 28 Apr 2014 22:47:16 -0000 Mailing-List: contact notifications-help@accumulo.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: jira@apache.org Delivered-To: mailing list notifications@accumulo.apache.org Received: (qmail 9553 invoked by uid 99); 28 Apr 2014 22:47:15 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 28 Apr 2014 22:47:15 +0000 Date: Mon, 28 Apr 2014 22:47:15 +0000 (UTC) From: "Keith Turner (JIRA)" To: notifications@accumulo.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Created] (ACCUMULO-2749) 1.6.0RC4 slower than 1.5.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 Keith Turner created ACCUMULO-2749: -------------------------------------- Summary: 1.6.0RC4 slower than 1.5.1 Key: ACCUMULO-2749 URL: https://issues.apache.org/jira/browse/ACCUMULO-2749 Project: Accumulo Issue Type: Bug Affects Versions: 1.6.0 Reporter: Keith Turner Fix For: 1.6.1 I am seeing consistently slower write rates when comparing 1.5.1 and 1.6.0 RC4. Following env : * hadoop 2.2.0 * Zookeeper 3.4.5 * Centos 6 (native, not a VM) * using examples/3GB/native-standalone config * setting tserver.mutation.queue.max 4M * I am running test/system/test1/ingest_test.sh * single node Saw the following rates {noformat} 1.5.1 aggregate rate : 200,806 records/sec 1.6.0 aggregate rate : 181,264 records/sec (90%) {noformat} Reran test setting table.walog.enabled=false {noformat} 1.5.1 aggregate rate : 302,307 records/sec 1.6.0 aggregate rate : 232,685 records/sec (77%) {noformat} Since the relative performance gap seemed to widen when disabling walog I tried another test where I disabled walogs and set the devnull iterator {noformat} 1.5.1 aggregate rate : 554,853 records/sec 1.6.0 aggregate rate : 373,556 records/sec (67%) {noformat} The relative performance gap grew even further. Used the following command to enable dev null iterator in 1.5.1 and RC4 {noformat} config -t test_ingest -s table.iterator.minc.devnull=10,org.apache.accumulo.core.iterators.DevNull {noformat} -- This message was sent by Atlassian JIRA (v6.2#6252)