Return-Path: X-Original-To: apmail-cassandra-commits-archive@www.apache.org Delivered-To: apmail-cassandra-commits-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 1362D10A81 for ; Thu, 20 Feb 2014 21:00:26 +0000 (UTC) Received: (qmail 48412 invoked by uid 500); 20 Feb 2014 21:00:22 -0000 Delivered-To: apmail-cassandra-commits-archive@cassandra.apache.org Received: (qmail 48347 invoked by uid 500); 20 Feb 2014 21:00:21 -0000 Mailing-List: contact commits-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@cassandra.apache.org Delivered-To: mailing list commits@cassandra.apache.org Received: (qmail 48204 invoked by uid 99); 20 Feb 2014 21:00:20 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 20 Feb 2014 21:00:20 +0000 Date: Thu, 20 Feb 2014 21:00:20 +0000 (UTC) From: "Ryan McGuire (JIRA)" To: commits@cassandra.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Created] (CASSANDRA-6746) Reads have a slow ramp up in speed MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 Ryan McGuire created CASSANDRA-6746: --------------------------------------- Summary: Reads have a slow ramp up in speed Key: CASSANDRA-6746 URL: https://issues.apache.org/jira/browse/CASSANDRA-6746 Project: Cassandra Issue Type: Bug Reporter: Ryan McGuire Attachments: 2.1_vs_2.0_read.png On a physical four node cluister I am doing a big write and then a big read. The read takes a long time to ramp up to respectable speeds. !2.1_vs_2.0_read.png! [See data here|http://ryanmcguire.info/ds/graph/graph.html?stats=stats.2.1_vs_2.0_vs_1.2.retry1.json&metric=interval_op_rate&operation=stress-read&smoothing=1] -- This message was sent by Atlassian JIRA (v6.1.5#6160)