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    <title>Support Forums: Message List - BTrees on J2EE</title>
    <link>http://www.theserverside.com</link>
    <description>Most recent forum messages</description>
    <language>en</language>
    
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    <pubDate>Sat, 25 May 2013 21:33:10 -0400</pubDate>


    <item>

        <title>Thank you, lets do more of this.</title>
        <link>http://www.theserverside.com/discussions/thread.tss?thread_id=25487</link>

        

        
            <description><![CDATA[Ken,<br><br>&nbsp;&nbsp;&nbsp;&nbsp;Thanks for taking the time to run such a comparison, we should do more of this.  Healthy competition is good for all of us.  Your second run of performance numbers shows us within a respectable range of your numbers,...]]></description>
        

        <pubDate>Tue, 27 Apr 2004 15:35:03 -0400</pubDate>

        

        <jf:creationDate>Tue, 27 Apr 2004 15:35:03 -0400</jf:creationDate>
        <jf:modificationDate>Tue, 27 Apr 2004 15:35:03 -0400</jf:modificationDate>
        <jf:date>Apr 27, 2004</jf:date>
        <jf:author>Gregory Burd</jf:author>
        <jf:replyCount>0</jf:replyCount>
    </item>


    <item>

        <title>J2EE on BTree - comarisons with Source Forge and Berkeley</title>
        <link>http://www.theserverside.com/discussions/thread.tss?thread_id=25487</link>

        

        
            <description><![CDATA[The Virtual Machinery does not use sync() on the File Descriptor but it is very simple to extend the File access methods (even without the source code) and over-ride the flush() method to do this.<br><br>Our transaction control is scalable the commit...]]></description>
        

        <pubDate>Tue, 27 Apr 2004 14:31:33 -0400</pubDate>

        

        <jf:creationDate>Tue, 27 Apr 2004 14:31:33 -0400</jf:creationDate>
        <jf:modificationDate>Tue, 27 Apr 2004 14:31:33 -0400</jf:modificationDate>
        <jf:date>Apr 27, 2004</jf:date>
        <jf:author>Ken Hall</jf:author>
        <jf:replyCount>1</jf:replyCount>
    </item>


    <item>

        <title>J2EE on BTree - comarisons with Source Forge and Berkeley</title>
        <link>http://www.theserverside.com/discussions/thread.tss?thread_id=25487</link>

        

        
            <description><![CDATA[<blockquote>Thanks for the feedback Andreas. I will re-run these tests with the sync off for Berkeley DB and also with ours on - this is one reason I hate publishing tests - even when you try to be fair you end up being unfair so apologies to the guys at...]]></description>
        

        <pubDate>Tue, 27 Apr 2004 04:52:55 -0400</pubDate>

        

        <jf:creationDate>Tue, 27 Apr 2004 04:52:55 -0400</jf:creationDate>
        <jf:modificationDate>Tue, 27 Apr 2004 04:52:55 -0400</jf:modificationDate>
        <jf:date>Apr 27, 2004</jf:date>
        <jf:author>Andreas Mueller</jf:author>
        <jf:replyCount>2</jf:replyCount>
    </item>


    <item>

        <title>J2EE on BTree - comarisons with Source Forge and Berkeley</title>
        <link>http://www.theserverside.com/discussions/thread.tss?thread_id=25487</link>

        

        
            <description><![CDATA[Thanks for the feedback Andreas. I will re-run these tests with the sync off for Berkeley DB and also with ours on - this is one reason I hate publishing tests - even when you try to be fair you end up being unfair so apologies to the guys at...]]></description>
        

        <pubDate>Tue, 27 Apr 2004 04:14:08 -0400</pubDate>

        

        <jf:creationDate>Tue, 27 Apr 2004 04:14:08 -0400</jf:creationDate>
        <jf:modificationDate>Tue, 27 Apr 2004 04:14:08 -0400</jf:modificationDate>
        <jf:date>Apr 27, 2004</jf:date>
        <jf:author>Ken Hall</jf:author>
        <jf:replyCount>3</jf:replyCount>
    </item>


    <item>

        <title>J2EE on BTree - comarisons with Source Forge and Berkeley</title>
        <link>http://www.theserverside.com/discussions/thread.tss?thread_id=25487</link>

        

        
            <description><![CDATA[<blockquote>All Entries Cached**<br>Commit on each entry (ms)<br>Add				0.039		43.67		46.77<br>Del				0.033		50.33		46.64</blockquote>I did some tests with Berkeley DB myself. Your above numbers seems to be using disk syncs while your BTree numbers don't...]]></description>
        

        <pubDate>Tue, 27 Apr 2004 03:06:04 -0400</pubDate>

        

        <jf:creationDate>Tue, 27 Apr 2004 03:06:04 -0400</jf:creationDate>
        <jf:modificationDate>Tue, 27 Apr 2004 03:06:04 -0400</jf:modificationDate>
        <jf:date>Apr 27, 2004</jf:date>
        <jf:author>Andreas Mueller</jf:author>
        <jf:replyCount>4</jf:replyCount>
    </item>


    <item>

        <title>Comparison figures - reformatted</title>
        <link>http://www.theserverside.com/discussions/thread.tss?thread_id=25487</link>

        

        
            <description><![CDATA[Sorry about the format in the previous method - I thought tabs might work - hopefully a table will!<br><br>Comparison of performance of Virtual Machinery (VM), Source Forge (SF) and Berkeley Java BTree Implementations<br>All were most recent...]]></description>
        

        <pubDate>Mon, 26 Apr 2004 21:06:16 -0400</pubDate>

        

        <jf:creationDate>Mon, 26 Apr 2004 21:06:16 -0400</jf:creationDate>
        <jf:modificationDate>Mon, 26 Apr 2004 21:06:16 -0400</jf:modificationDate>
        <jf:date>Apr 26, 2004</jf:date>
        <jf:author>Ken Hall</jf:author>
        <jf:replyCount>0</jf:replyCount>
    </item>


    <item>

        <title>J2EE on BTree - comarisons with Source Forge and Berkeley</title>
        <link>http://www.theserverside.com/discussions/thread.tss?thread_id=25487</link>

        

        
            <description><![CDATA[<blockquote><a href="http://www.sleepycat.com/products/je.shtml" target="_blank">Berkley DB Java Edition</a></blockquote>As part of this release we undertook some comparative performance related tests with SourceForge and Berkeley BTree implementations....]]></description>
        

        <pubDate>Mon, 26 Apr 2004 20:41:04 -0400</pubDate>

        

        <jf:creationDate>Mon, 26 Apr 2004 20:41:04 -0400</jf:creationDate>
        <jf:modificationDate>Mon, 26 Apr 2004 20:41:04 -0400</jf:modificationDate>
        <jf:date>Apr 26, 2004</jf:date>
        <jf:author>Ken Hall</jf:author>
        <jf:replyCount>6</jf:replyCount>
    </item>


    <item>

        <title>BTrees on J2EE</title>
        <link>http://www.theserverside.com/discussions/thread.tss?thread_id=25487</link>

        

        
            <description><![CDATA[It is relatively easy to modify the page size and number restrictions if you have the source code option. It is our hope to make this easier in the future (when we started in 1990 4Gb was an awful lot of memory!) as we realise that BTrees are ideal for...]]></description>
        

        <pubDate>Mon, 26 Apr 2004 20:26:17 -0400</pubDate>

        

        <jf:creationDate>Mon, 26 Apr 2004 20:26:17 -0400</jf:creationDate>
        <jf:modificationDate>Mon, 26 Apr 2004 20:26:17 -0400</jf:modificationDate>
        <jf:date>Apr 26, 2004</jf:date>
        <jf:author>Ken Hall</jf:author>
        <jf:replyCount>0</jf:replyCount>
    </item>


    <item>

        <title>BTrees on J2EE</title>
        <link>http://www.theserverside.com/discussions/thread.tss?thread_id=25487</link>

        

        
            <description><![CDATA[It looks very interesting, although the 4GB (64k x 64k) limit is very concerning. It would be nice to see a 281TB (16m x 16m) option, since occasionally you want larger pages, or more of them, e.g. to achieve 4GB with 8KB pages (524k x 8k). Any future...]]></description>
        

        <pubDate>Mon, 26 Apr 2004 14:51:54 -0400</pubDate>

        

        <jf:creationDate>Mon, 26 Apr 2004 14:51:54 -0400</jf:creationDate>
        <jf:modificationDate>Mon, 26 Apr 2004 14:51:54 -0400</jf:modificationDate>
        <jf:date>Apr 26, 2004</jf:date>
        <jf:author>Cameron Purdy</jf:author>
        <jf:replyCount>1</jf:replyCount>
    </item>


    <item>

        <title>BerkleyDB Java edition</title>
        <link>http://www.theserverside.com/discussions/thread.tss?thread_id=25487</link>

        

        
            <description><![CDATA[<a href="http://www.sleepycat.com/products/je.shtml" target="_blank">Berkley DB Java Edition</a>]]></description>
        

        <pubDate>Mon, 26 Apr 2004 11:32:57 -0400</pubDate>

        

        <jf:creationDate>Mon, 26 Apr 2004 11:32:57 -0400</jf:creationDate>
        <jf:modificationDate>Mon, 26 Apr 2004 11:32:57 -0400</jf:modificationDate>
        <jf:date>Apr 26, 2004</jf:date>
        <jf:author>Giedrius Trumpickas</jf:author>
        <jf:replyCount>7</jf:replyCount>
    </item>


    <item>

        <title>BTrees on J2EE</title>
        <link>http://www.theserverside.com/discussions/thread.tss?thread_id=25487</link>

        

        
            <description><![CDATA[BTrees are one of the best kept secrets in programming - despite almost everybody learning about them in college - they seem to feature in Computing 101 as an academic exercise then be forgotten. <br><br>They have considerable value as an intermediate...]]></description>
        

        <pubDate>Sat, 24 Apr 2004 06:09:45 -0400</pubDate>

        

        <jf:creationDate>Sat, 24 Apr 2004 06:09:45 -0400</jf:creationDate>
        <jf:modificationDate>Sat, 24 Apr 2004 06:09:45 -0400</jf:modificationDate>
        <jf:date>Apr 24, 2004</jf:date>
        <jf:author>Ken Hall</jf:author>
        <jf:replyCount>10</jf:replyCount>
    </item>



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