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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-13937] Allow setting a window and interval for the TTL monitor</title>
                <link>https://jira.mongodb.org/browse/SERVER-13937</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The TTL monitor incurs high load on our system. It deletes the oldest data which is never used so it generates lots of page faults, disk load, and readers  start to accumulate in the queue.&lt;/p&gt;

&lt;p&gt;It would be more efficient to run during the night time where the load on our system is low. It would be nice to set a start/end time window and also an interval. I believe a higher interval could also contribute to overall efficiency.&lt;/p&gt;</description>
                <environment></environment>
        <key id="136373">SERVER-13937</key>
            <summary>Allow setting a window and interval for the TTL monitor</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="alonho">Alon Horev</reporter>
                        <labels>
                            <label>TTLMonitor</label>
                    </labels>
                <created>Wed, 14 May 2014 07:55:29 +0000</created>
                <updated>Tue, 6 Dec 2022 05:06:03 +0000</updated>
                            <resolved>Mon, 9 Nov 2020 19:11:00 +0000</resolved>
                                                                    <component>Storage</component>
                                        <votes>4</votes>
                                    <watches>12</watches>
                                                                                                                <comments>
                            <comment id="2156273" author="milkie" created="Tue, 19 Feb 2019 21:23:19 +0000"  >&lt;p&gt;We hope to make the TTL deleter more efficient such that it doesn&apos;t put such a high load on servers when it runs.&#160; Thus, scheduling wouldn&apos;t need to be required.&lt;/p&gt;</comment>
                            <comment id="778719" author="asya" created="Thu, 4 Dec 2014 19:02:37 +0000"  >&lt;p&gt;Agreed on the goal of the ticket.&lt;/p&gt;

&lt;p&gt;The commands listed can be useful for anyone who doesn&apos;t know that they can disable and enable TTL monitor via cron scripts (or similar) as a workaround until the window feature is implemented within the server itself.&lt;/p&gt;
</comment>
                            <comment id="778288" author="alonho" created="Thu, 4 Dec 2014 14:06:54 +0000"  >&lt;p&gt;Hi Asya, we&apos;re aware of the ttlMonitorEnabled. This is about defining a window similar to the balancer window.&lt;/p&gt;</comment>
                            <comment id="777925" author="asya" created="Wed, 3 Dec 2014 22:42:38 +0000"  >&lt;p&gt;This is already currently possible with the following:&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;db.adminCommand({setParameter:1, ttlMonitorEnabled:false});&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;db.adminCommand({setParameter:1, ttlMonitorEnabled:true});&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;
</comment>
                            <comment id="631544" author="asya" created="Mon, 23 Jun 2014 16:30:16 +0000"  >&lt;p&gt;Looks like related to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-6712&quot; title=&quot;Make TTL Collection background task period user defined (command line option)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-6712&quot;&gt;&lt;del&gt;SERVER-6712&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="12188">SERVER-1256</issuekey>
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            <issuelink>
            <issuekey id="65749">SERVER-8616</issuekey>
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