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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-18286] Adjust the value of the WiredTiger file_manager values passed to wiredtiger_open</title>
                <link>https://jira.mongodb.org/browse/SERVER-18286</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The WiredTiger engine automatically closes and evicts idle tables in order to free cache space quickly.  There are three knobs that can be adjusted to tune when and how often the file manager checks for idle tables.&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;&lt;tt&gt;close_handle_minimum&lt;/tt&gt;: number of handles open before the file manager will look for handles to close; default 250&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;close_idle_time&lt;/tt&gt;: amount of time in seconds a file handle needs to be idle before attempting to close it; default 30 secs&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;close_scan_interval&lt;/tt&gt;	: interval in seconds at which to check for files that are inactive and close them; default 10 secs&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;The defaults should be increased in the MongoDB integration layer.  This will result in the regular LRU eviction policy to control when collections are evicted from cache and is more in line with behavior most users expect.&lt;/p&gt;</description>
                <environment></environment>
        <key id="201401">SERVER-18286</key>
            <summary>Adjust the value of the WiredTiger file_manager values passed to wiredtiger_open</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</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="9">Done</resolution>
                                        <assignee username="dan@mongodb.com">Daniel Pasette</assignee>
                                    <reporter username="dan@mongodb.com">Daniel Pasette</reporter>
                        <labels>
                    </labels>
                <created>Thu, 30 Apr 2015 23:34:51 +0000</created>
                <updated>Sat, 19 Sep 2015 00:03:24 +0000</updated>
                            <resolved>Wed, 13 May 2015 04:48:35 +0000</resolved>
                                                    <fixVersion>3.0.4</fixVersion>
                    <fixVersion>3.1.3</fixVersion>
                                    <component>WiredTiger</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="912443" author="dan@10gen.com" created="Wed, 13 May 2015 04:48:35 +0000"  >&lt;p&gt;Will re-address fix if &lt;a href=&quot;https://jira.mongodb.org/browse/WT-1930&quot; title=&quot;Change meaning of file_manager.close_handle_minimum=0 to turns off sweep of handles&quot; class=&quot;issue-link&quot; data-issue-key=&quot;WT-1930&quot;&gt;&lt;del&gt;WT-1930&lt;/del&gt;&lt;/a&gt; is resolved&lt;/p&gt;</comment>
                            <comment id="912436" author="xgen-internal-githook" created="Wed, 13 May 2015 04:35:11 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;monkey101&apos;, u&apos;name&apos;: u&apos;Dan Pasette&apos;, u&apos;email&apos;: u&apos;dan@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-18286&quot; title=&quot;Adjust the value of the WiredTiger file_manager values passed to wiredtiger_open&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-18286&quot;&gt;&lt;del&gt;SERVER-18286&lt;/del&gt;&lt;/a&gt; Increase the value of the WiredTiger close_idle_time&lt;/p&gt;

&lt;p&gt;Set the value of close_idle_time to ~28 hours to prevent idle&lt;br/&gt;
collections and indexes from being forced out of cache&lt;br/&gt;
Branch: v3.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/564140a0aae77d6c5a959e7a2656f2fc32047930&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/564140a0aae77d6c5a959e7a2656f2fc32047930&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="912434" author="xgen-internal-githook" created="Wed, 13 May 2015 04:27:49 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;monkey101&apos;, u&apos;name&apos;: u&apos;Dan Pasette&apos;, u&apos;email&apos;: u&apos;dan@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-18286&quot; title=&quot;Adjust the value of the WiredTiger file_manager values passed to wiredtiger_open&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-18286&quot;&gt;&lt;del&gt;SERVER-18286&lt;/del&gt;&lt;/a&gt; Increase the value of the WiredTiger close_idle_time&lt;/p&gt;

&lt;p&gt;Set the value of close_idle_time to ~28 hours to prevent idle&lt;br/&gt;
collections and indexes from being forced out of cache&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f5450e9bc5cf63c3dc4d9cb416713b0f6970e6d4&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f5450e9bc5cf63c3dc4d9cb416713b0f6970e6d4&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="912255" author="dan@10gen.com" created="Tue, 12 May 2015 23:12:16 +0000"  >&lt;p&gt;cc: &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=michael.cahill&quot; class=&quot;user-hover&quot; rel=&quot;michael.cahill&quot;&gt;michael.cahill&lt;/a&gt;&lt;br/&gt;
Adding a temporary fix to be backported to 3.0, but won&apos;t close this ticket.&lt;br/&gt;
Waiting on API change from WT API which will make setting close_handle_minimum=0 turns off sweep of handles, but won&apos;t negatively impact LSM which should continue to close obsolete trees.&lt;/p&gt;</comment>
                    </comments>
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                                        <issuelink>
            <issuekey id="203494">WT-1929</issuekey>
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            <issuekey id="194477">SERVER-17907</issuekey>
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