Return-Path: Delivered-To: apmail-db-derby-dev-archive@www.apache.org Received: (qmail 28507 invoked from network); 8 Sep 2008 16:50:08 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 8 Sep 2008 16:50:08 -0000 Received: (qmail 80658 invoked by uid 500); 8 Sep 2008 16:50:04 -0000 Delivered-To: apmail-db-derby-dev-archive@db.apache.org Received: (qmail 80517 invoked by uid 500); 8 Sep 2008 16:50:04 -0000 Mailing-List: contact derby-dev-help@db.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: Delivered-To: mailing list derby-dev@db.apache.org Received: (qmail 80478 invoked by uid 99); 8 Sep 2008 16:50:04 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 08 Sep 2008 09:50:03 -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; Mon, 08 Sep 2008 16:49:13 +0000 Received: from brutus (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id 7D073234C1D9 for ; Mon, 8 Sep 2008 09:49:44 -0700 (PDT) Message-ID: <1433776338.1220892584511.JavaMail.jira@brutus> Date: Mon, 8 Sep 2008 09:49:44 -0700 (PDT) From: "Rick Hillegas (JIRA)" To: derby-dev@db.apache.org Subject: [jira] Updated: (DERBY-3731) Improve calculation of refSize in ClassSize.java In-Reply-To: <1481704965.1213911705179.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/DERBY-3731?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Rick Hillegas updated DERBY-3731: --------------------------------- Fix Version/s: (was: 10.4.2.0) 10.4.2.1 > Improve calculation of refSize in ClassSize.java > ------------------------------------------------- > > Key: DERBY-3731 > URL: https://issues.apache.org/jira/browse/DERBY-3731 > Project: Derby > Issue Type: Bug > Components: SQL > Affects Versions: 10.5.0.0 > Reporter: Kathey Marsden > Assignee: Kristian Waagan > Priority: Minor > Fix For: 10.4.2.1, 10.5.0.0 > > Attachments: derby-3731-1a-refsize_from_properties.diff, derby-3731-1b-refsize_from_properties.diff, derby-3731-1b-refsize_from_properties.stat, derby-3731-1c-refsize_from_properties.diff, DERBY-3731_diff.txt > > > java/engine/org/apache/derby/iapi/services/cache/ClassSize.java has a static code block which calculates the size of a reference for the architecture. This code could be improved by adding garbage collection before measuring memory, to give a consistent reading. Also there have been suggestions that we use os.arch or sun.arch.data.model to make the measurement more reliable, especially on 64bit machines. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.