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    <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-12011] Add additional fields to output of dbStats command and collStats command</title>
                <link>https://jira.mongodb.org/browse/SERVER-12011</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The &lt;tt&gt;dbStats&lt;/tt&gt; command only outputs a subset of the data that would be of interest to a DBA when diagnosing storage issues.  The current fields output are:&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;fileSize: amount of disk space used&lt;/li&gt;
	&lt;li&gt;dataSize: amount of space used by data  (Sum of datasize for all collections)&lt;/li&gt;
	&lt;li&gt;storageSize:  sum of extents allocated for data for all collections&lt;/li&gt;
	&lt;li&gt;indexSize: amount of space used by indexes&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Additional fields of interest would be:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;indexStorageSize: sum of extents allocated for indexes for all collections&lt;/li&gt;
	&lt;li&gt;freeExtentSize: sum of extents on the free list&lt;/li&gt;
	&lt;li&gt;freeRecordSize: sum of records on the record free list&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Both &apos;indexStorageSize&apos; and &apos;freeRecordSize&apos; could also be added to the output of &lt;tt&gt;collStats&lt;/tt&gt;&lt;/p&gt;

&lt;p&gt;The net effect would be to much better determine the need to compact or repair a database or collection.  It would also make the results of compact visible to users&lt;/p&gt;</description>
                <environment></environment>
        <key id="101641">SERVER-12011</key>
            <summary>Add additional fields to output of dbStats command and collStats command</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="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="william.zola@10gen.com">William Zola</reporter>
                        <labels>
                    </labels>
                <created>Mon, 9 Dec 2013 15:16:29 +0000</created>
                <updated>Tue, 6 Dec 2022 05:14:06 +0000</updated>
                            <resolved>Tue, 6 Dec 2016 15:29:18 +0000</resolved>
                                                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1450228" author="milkie" created="Tue, 6 Dec 2016 15:29:18 +0000"  >&lt;p&gt;These fields would be specific to MMAPv1 only, and the index sizes are already available.&lt;/p&gt;</comment>
                            <comment id="467815" author="scotthernandez" created="Mon, 9 Dec 2013 16:36:54 +0000"  >&lt;p&gt;These stats could be &lt;b&gt;very&lt;/b&gt; costly since they would require walking the free lists and (possibly) paging in each item. It would also (significantly) affect memory use and cause poor caching behavior on/after each call.&lt;/p&gt;

&lt;p&gt;It would probably be better to keep counters for these things if we wish to report them regularly since the cost to calculate them had negative effects. For example, we keep a counter for datasize and records (docs + padding - header) in the namespace details (for a collection).&lt;/p&gt;</comment>
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