Return-Path: Delivered-To: apmail-hadoop-hbase-dev-archive@locus.apache.org Received: (qmail 95220 invoked from network); 26 Jul 2008 22:04:54 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 26 Jul 2008 22:04:54 -0000 Received: (qmail 5191 invoked by uid 500); 26 Jul 2008 22:04:54 -0000 Delivered-To: apmail-hadoop-hbase-dev-archive@hadoop.apache.org Received: (qmail 5170 invoked by uid 500); 26 Jul 2008 22:04:54 -0000 Mailing-List: contact hbase-dev-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: hbase-dev@hadoop.apache.org Delivered-To: mailing list hbase-dev@hadoop.apache.org Received: (qmail 5159 invoked by uid 99); 26 Jul 2008 22:04:54 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 26 Jul 2008 15:04:54 -0700 X-ASF-Spam-Status: No, hits=-2000.0 required=10.0 tests=ALL_TRUSTED X-Spam-Check-By: apache.org Received: from [140.211.11.140] (HELO brutus.apache.org) (140.211.11.140) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 26 Jul 2008 22:04:05 +0000 Received: from brutus (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id A60D4234C17D for ; Sat, 26 Jul 2008 15:04:31 -0700 (PDT) Message-ID: <1925772992.1217109871679.JavaMail.jira@brutus> Date: Sat, 26 Jul 2008 15:04:31 -0700 (PDT) From: "stack (JIRA)" To: hbase-dev@hadoop.apache.org Subject: [jira] Commented: (HBASE-779) Test changing hbase.hregion.memcache.block.multiplier to 2 In-Reply-To: <935937494.1217097631715.JavaMail.jira@brutus> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Virus-Checked: Checked by ClamAV on apache.org [ https://issues.apache.org/jira/browse/HBASE-779?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12617221#action_12617221 ] stack commented on HBASE-779: ----------------------------- In todd lipcon testing, this parameter set to 2 seems to increase rate at which we take on writes considerably (duh!) and until he hit HBASE-751, all seemed to be running smoothly. > Test changing hbase.hregion.memcache.block.multiplier to 2 > ---------------------------------------------------------- > > Key: HBASE-779 > URL: https://issues.apache.org/jira/browse/HBASE-779 > Project: Hadoop HBase > Issue Type: Improvement > Reporter: stack > Priority: Blocker > Fix For: 0.2.0 > > > Currently its set to 1. Under load, seeing fill-cache/pause-while-cache-is-flushed cycle. Changing multiplier to 2 could make hbase take on load faster (Was set to 1 because compactions used to overwhelm the system but now HBASE-745 added a not-so-dumb compaction algorithim, we might be able to run w/ a value of 2). -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.