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    <title>MongoDB Jira</title>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-13346] Provide an option to force journal preallocation and recycling</title>
                <link>https://jira.mongodb.org/browse/SERVER-13346</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Journal file preallocation and recycling (see preallocj in the code) is enabled based on the outcome of a short performance test run at process start. When mongod is deployed at scale this is likely to result in some servers using preallocj=true and others using preallocj=false. That non-determinism is not good for a DBA. &lt;/p&gt;

&lt;p&gt;I get 10% better throughput from insert benchmark workloads using fast (PCIe flash) storage after forcing preallocj to be true. See &lt;a href=&quot;http://smalldatum.blogspot.com/2014/03/redo-logs-in-mongodb-and-innodb.html&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://smalldatum.blogspot.com/2014/03/redo-logs-in-mongodb-and-innodb.html&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="127525">SERVER-13346</key>
            <summary>Provide an option to force journal preallocation and recycling</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="mdcallag">Mark Callaghan</reporter>
                        <labels>
                    </labels>
                <created>Tue, 25 Mar 2014 17:28:48 +0000</created>
                <updated>Tue, 6 Dec 2022 05:08:39 +0000</updated>
                            <resolved>Fri, 14 Sep 2018 20:00:26 +0000</resolved>
                                                                    <component>MMAPv1</component>
                    <component>Storage</component>
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