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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>
    </build-info>


<item>
            <title>[SERVER-59696] Include SBE plan cache as part of cache size metric</title>
                <link>https://jira.mongodb.org/browse/SERVER-59696</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Right now the server metric `query.planCacheTotalSizeEstimateBytes` refers to the classic plan cache. We need to update this metric when we introduce the SBE plan cache.&lt;/p&gt;

&lt;p&gt;Three options proposed by &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=david.storch&quot; class=&quot;user-hover&quot; rel=&quot;david.storch&quot;&gt;david.storch&lt;/a&gt;:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Make this metric reflect the sum of the sizes of the classic plan caches and the SBE plan cache.&lt;/li&gt;
	&lt;li&gt;Make this metric reflect the size of the classic plan caches only, omitting the size of the SBE plan cache.&lt;/li&gt;
	&lt;li&gt;Make this metric reflect the size of the classic plan caches only, and introduce a new metric indicating the size of the SBE plan cache.&lt;/li&gt;
&lt;/ol&gt;
</description>
                <environment></environment>
        <key id="1864494">SERVER-59696</key>
            <summary>Include SBE plan cache as part of cache size metric</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="alexander.ignatyev@mongodb.com">Alexander Ignatyev</assignee>
                                    <reporter username="joshua.lapacik@mongodb.com">Joshua Lapacik</reporter>
                        <labels>
                    </labels>
                <created>Tue, 31 Aug 2021 16:30:19 +0000</created>
                <updated>Sun, 29 Oct 2023 21:49:02 +0000</updated>
                            <resolved>Wed, 2 Feb 2022 10:31:05 +0000</resolved>
                                                    <fixVersion>5.3.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4329611" author="xgen-internal-githook" created="Wed, 2 Feb 2022 07:52:22 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;joshua&apos;, &apos;email&apos;: &apos;80741223+jlap199@users.noreply.github.com&apos;, &apos;username&apos;: &apos;jlap199&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-59696&quot; title=&quot;Include SBE plan cache as part of cache size metric&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-59696&quot;&gt;&lt;del&gt;SERVER-59696&lt;/del&gt;&lt;/a&gt; Include SBE plan cache as part of cache size metric&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/616ba6a01e803ab159edcca954131c5fe3a9b0ef&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/616ba6a01e803ab159edcca954131c5fe3a9b0ef&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4161511" author="JIRAUSER1259054" created="Mon, 1 Nov 2021 19:20:50 +0000"  >&lt;p&gt;After discussion, we&apos;ve decided not to change the current implementation which reports the sum of both plan caches in the `query.planCacheTotalSizeEstimateBytes` metric. Just need to add a test.&lt;/p&gt;</comment>
                            <comment id="4032524" author="david.storch" created="Tue, 31 Aug 2021 20:26:03 +0000"  >&lt;p&gt;Anton proposed the following, which is similar to option (3):&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;query: {&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;   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;   planCacheTotalSizeEstimateBytes: {&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;   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;      classic: 100, // we can pick better names&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;   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;      sbe: 200,&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;   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;      total: 300&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;   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;   }&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;}&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;I&apos;m a little unsure if we should go with this suggestion, however, since it changes the format of the &lt;tt&gt;planCacheTotalSizeEstimateBytes&lt;/tt&gt; serverStatus metric. We will have to determine whether this is an acceptable change. The other reason for my hesitation is that, in the long run, it should be unusual to have both SBE and classic plan caches. As SBE starts to handle more and more queries, the classic plan cache (and indeed the entire classic engine) should be used less and less. Eventually we would have to change the format once again when phasing out the classic engine.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10011">
                    <name>Depends</name>
                                            <outwardlinks description="depends on">
                                        <issuelink>
            <issuekey id="1886905">SERVER-60339</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="is depended on by">
                                        <issuelink>
            <issuekey id="1918186">SERVER-61241</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1918376">SERVER-61248</issuekey>
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