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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>[DOCS-13278] Investigate changes in SERVER-44296: Report sufficient significant figures of Flow Control locksPerOp in FTDC</title>
                <link>https://jira.mongodb.org/browse/DOCS-13278</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;

    &lt;div class=&quot;panel&quot; style=&quot;background-color: #c2d2c2;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelHeader&quot; style=&quot;border-bottom-width: 1px;background-color: #239eb0;&quot;&gt;&lt;b&gt;Downstream Change Summary&lt;/b&gt;&lt;/div&gt;&lt;div class=&quot;panelContent&quot; style=&quot;background-color: #c2d2c2;&quot;&gt;
&lt;p&gt;    The serverStats flowControl.locksPerOp field has been replaced by flowControl.locksPerKiloOp (to ensure sufficient significant figures are reported in FTDC).&lt;/p&gt;
&lt;/div&gt;&lt;/div&gt;

&lt;h2&gt;&lt;a name=&quot;DescriptionofLinkedTicket&quot;&gt;&lt;/a&gt;Description of Linked Ticket&lt;/h2&gt;
&lt;p&gt;    Numerical data in FTDC is stored as 64-bit integers. Flow Control &lt;a href=&quot;https://github.com/mongodb/mongo/blob/29cd14ad598a3594529201fa095cc1fa3dc68e07/src/mongo/db/storage/flow_control.cpp#L200&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;locksPerOp&lt;/tt&gt;&lt;/a&gt; is a floating point value, and is rounded down to 0 in FTDC when its value is &amp;lt; 1. &lt;br/&gt;
&lt;tt&gt;locksPerOp&lt;/tt&gt; is expected to be less than 1 in certain batch write scenarios, so it is important to ensure that it still gets reported as nonzero in these scenarios.&lt;/p&gt;

&lt;p&gt;Some ways to ensure this are:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Report opsPerLock in addition to locksPerOp&lt;/li&gt;
	&lt;li&gt;Multiply locksPerOp by some constant multiple of 10 to ensure sufficient significant figures&lt;/li&gt;
&lt;/ol&gt;



&lt;h2&gt;&lt;a name=&quot;Scopeofchanges&quot;&gt;&lt;/a&gt;Scope of changes&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;ImpacttoOtherDocs&quot;&gt;&lt;/a&gt;Impact to Other Docs&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;MVP%28WorkandDate%29&quot;&gt;&lt;/a&gt;MVP (Work and Date)&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Resources%28ScopeorDesignDocs%2CInvision%2Cetc.%29&quot;&gt;&lt;/a&gt;Resources (Scope or Design Docs, Invision, etc.)&lt;/h2&gt;
</description>
                <environment></environment>
        <key id="1047058">DOCS-13278</key>
            <summary>Investigate changes in SERVER-44296: Report sufficient significant figures of Flow Control locksPerOp in FTDC</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="kay.kim@mongodb.com">Kay Kim</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
                            <label>docs-administration</label>
                            <label>docs-grab-bag</label>
                    </labels>
                <created>Tue, 10 Dec 2019 20:04:57 +0000</created>
                <updated>Mon, 13 Nov 2023 18:12:45 +0000</updated>
                            <resolved>Tue, 18 Feb 2020 15:56:41 +0000</resolved>
                                                    <fixVersion>4.3.3</fixVersion>
                    <fixVersion>Server_Docs_20231030</fixVersion>
                    <fixVersion>Server_Docs_20231106</fixVersion>
                    <fixVersion>Server_Docs_20231105</fixVersion>
                    <fixVersion>Server_Docs_20231113</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2882385" author="xgen-internal-githook" created="Tue, 18 Feb 2020 15:52:39 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;kay-kim&apos;, &apos;name&apos;: &apos;Kay Kim&apos;, &apos;email&apos;: &apos;kay.kim@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-13278&quot; title=&quot;Investigate changes in SERVER-44296: Report sufficient significant figures of Flow Control locksPerOp in FTDC&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-13278&quot;&gt;&lt;del&gt;DOCS-13278&lt;/del&gt;&lt;/a&gt;: 4.4 serverStatus returns flowControl.locksPerKiloOp instead of locksPerOp&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/8c14f75024e2b8bf7c73f0f57493af7cff406657&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/8c14f75024e2b8bf7c73f0f57493af7cff406657&lt;/a&gt;&lt;/p&gt;</comment>
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