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    <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-49055] Report additional usage metrics from Biggie in the &apos;serverStatus&apos; command</title>
                <link>https://jira.mongodb.org/browse/SERVER-49055</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The&#160;&lt;b&gt;serverStatus&lt;/b&gt; command allows storage engines to append custom statistics to the output via the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/fdd66b8c2c0f5c818a01ecd64a27b0b7c0ca28d6/src/mongo/db/commands/server_status.h&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;ServerStatusSection interface&lt;/a&gt;. We can use this to report additional Biggie metrics such as:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Reporting to the total memory usage of the radix trees still available in the history.&#160;We&apos;ll have to watch out to avoid double counting shared nodes between the trees.&#160;Today, Biggie only&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/5edffc61e61b004811d7cde7728d9908aff4acc5/src/mongo/db/storage/biggie/store.h#L890&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;tracks the size of the stored values in data nodes only&lt;/a&gt;.&lt;/li&gt;
	&lt;li&gt;The average number of child nodes that each parent has. With the adaptive node work,&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/5edffc61e61b004811d7cde7728d9908aff4acc5/src/mongo/db/storage/biggie/store.h#L841&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this should decrease from 256&lt;/a&gt;&#160;dramatically.&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1387761">SERVER-49055</key>
            <summary>Report additional usage metrics from Biggie in the &apos;serverStatus&apos; command</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="13201">Fixed</resolution>
                                        <assignee username="yuhong.zhang@mongodb.com">Yuhong Zhang</assignee>
                                    <reporter username="gregory.wlodarek@mongodb.com">Gregory Wlodarek</reporter>
                        <labels>
                            <label>intern_ephemeral_for_test</label>
                    </labels>
                <created>Wed, 24 Jun 2020 13:56:48 +0000</created>
                <updated>Sun, 29 Oct 2023 22:06:36 +0000</updated>
                            <resolved>Thu, 16 Jul 2020 21:54:31 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3288856" author="xgen-internal-githook" created="Thu, 16 Jul 2020 21:46:56 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Yuhong Zhang&apos;, &apos;email&apos;: &apos;danielzhangyh@gmail.com&apos;, &apos;username&apos;: &apos;YuhongZhang98&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-49055&quot; title=&quot;Report additional usage metrics from Biggie in the &amp;#39;serverStatus&amp;#39; command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-49055&quot;&gt;&lt;del&gt;SERVER-49055&lt;/del&gt;&lt;/a&gt; Report additional usage metrics from Biggie in the &apos;serverStatus&apos; command&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/67db847b2b833a6df876a951ec8c08872d567008&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/67db847b2b833a6df876a951ec8c08872d567008&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3228853" author="gregory.wlodarek" created="Mon, 29 Jun 2020 19:47:47 +0000"  >&lt;p&gt;A nice approach for tracking the memory usage would be to increment/decrement an atomic number when the Node constructor/destructors are called.&lt;br/&gt;
One edge case that we&apos;ll need to consider for this is updating uniquely owned nodes data.&lt;/p&gt;</comment>
                    </comments>
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                                            <outwardlinks description="depends on">
                                        <issuelink>
            <issuekey id="1396057">SERVER-49198</issuekey>
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            <issuekey id="1385937">SERVER-49008</issuekey>
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