Return-Path: Delivered-To: apmail-cassandra-commits-archive@www.apache.org Received: (qmail 61199 invoked from network); 20 Jan 2011 20:07:25 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 20 Jan 2011 20:07:25 -0000 Received: (qmail 45412 invoked by uid 500); 20 Jan 2011 20:07:25 -0000 Delivered-To: apmail-cassandra-commits-archive@cassandra.apache.org Received: (qmail 45347 invoked by uid 500); 20 Jan 2011 20:07:24 -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 45214 invoked by uid 99); 20 Jan 2011 20:07:24 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 20 Jan 2011 20:07:24 +0000 X-ASF-Spam-Status: No, hits=-2000.0 required=10.0 tests=ALL_TRUSTED X-Spam-Check-By: apache.org Received: from [140.211.11.22] (HELO thor.apache.org) (140.211.11.22) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 20 Jan 2011 20:07:22 +0000 Received: from thor (localhost [127.0.0.1]) by thor.apache.org (8.13.8+Sun/8.13.8) with ESMTP id p0KK70FL026528 for ; Thu, 20 Jan 2011 20:07:01 GMT Message-ID: <147556.88801295554020875.JavaMail.jira@thor> Date: Thu, 20 Jan 2011 15:07:00 -0500 (EST) From: "Brandon Williams (JIRA)" To: commits@cassandra.apache.org Subject: [jira] Created: (CASSANDRA-2020) stress.java performance falls off heavily towards the end MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 X-Virus-Checked: Checked by ClamAV on apache.org stress.java performance falls off heavily towards the end --------------------------------------------------------- Key: CASSANDRA-2020 URL: https://issues.apache.org/jira/browse/CASSANDRA-2020 Project: Cassandra Issue Type: Improvement Reporter: Brandon Williams Assignee: Pavel Yaskevich Priority: Minor Fix For: 0.7.1 This is due to threads completing towards the end, such that there aren't enough to fully stress the cluster. The main problem here is that stress.java is a straight port of stress.py, where it each thread run through some range until it's done, and the threads finish at different times (probably offset by jvm warmup time.) Instead, a producer/consumer model would work better. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.