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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-68793] Investigate if AdmissionContext::_startProcessingTime is valid during resize</title>
                <link>https://jira.mongodb.org/browse/SERVER-68793</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Prior to&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-67905&quot; title=&quot;Create TicketHolder that queues by priority&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-67905&quot;&gt;&lt;del&gt;SERVER-67905&lt;/del&gt;&lt;/a&gt;, AdmissionContext::_startProcessingTime was initialized &lt;a href=&quot;https://github.com/10gen/mongo/blame/58703826eabe1351692fd0efa56d9d1665896b45/src/mongo/util/concurrency/admission_context.h#L106&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;as follows&lt;/a&gt;&#160;&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;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 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;TickSource::Tick _startProcessingTime{};&#160;&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;
&lt;p&gt;Now, it is initialized as&#160;&lt;/p&gt;
&lt;p/&gt;
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&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;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 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;TickSource::Tick _startProcessingTime{&lt;/span&gt;&lt;span style=&quot;color: #009900; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;0&lt;/span&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;
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&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;We should check if initializing the TicketSource tick to 0 instead of its default {} means the _startProcessingTime computed for ticketHolders will spit unrealistic values when the ticketHolder is resized.&#160;&lt;/p&gt;

&lt;p&gt;Example: TicketHolderWithQueueingStats::resize() &lt;a href=&quot;https://github.com/10gen/mongo/blob/1887b2c89ea10f24f1e1d9f08637d4af00f67700/src/mongo/util/concurrency/ticketholder.cpp#L147&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;calls&lt;/a&gt; TicketHolderWithQueueingStats::_release() with an &lt;a href=&quot;https://github.com/10gen/mongo/blob/1887b2c89ea10f24f1e1d9f08637d4af00f67700/src/mongo/util/concurrency/ticketholder.cpp#L145&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;AdmissionContext&lt;/a&gt; defined on the stack that never has its _startProcessingTime initialized to a non-zero value before it is used to &lt;a href=&quot;https://github.com/10gen/mongo/blob/1887b2c89ea10f24f1e1d9f08637d4af00f67700/src/mongo/util/concurrency/ticketholder.cpp#L183-L186&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;compute the _totalTimeProcessingMicros&lt;/a&gt;&lt;/p&gt;



&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="2112566">SERVER-68793</key>
            <summary>Investigate if AdmissionContext::_startProcessingTime is valid during resize</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="jordi.olivares-provencio@mongodb.com">Jordi Olivares Provencio</assignee>
                                    <reporter username="haley.connelly@mongodb.com">Haley Connelly</reporter>
                        <labels>
                    </labels>
                <created>Fri, 12 Aug 2022 16:33:00 +0000</created>
                <updated>Sun, 29 Oct 2023 21:34:33 +0000</updated>
                            <resolved>Mon, 5 Sep 2022 14:39:46 +0000</resolved>
                                                    <fixVersion>6.2.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4802435" author="xgen-internal-githook" created="Mon, 5 Sep 2022 12:40:06 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jordi Olivares Provencio&apos;, &apos;email&apos;: &apos;jordi.olivares-provencio@mongodb.com&apos;, &apos;username&apos;: &apos;jordiolivares&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-68793&quot; title=&quot;Investigate if AdmissionContext::_startProcessingTime is valid during resize&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-68793&quot;&gt;&lt;del&gt;SERVER-68793&lt;/del&gt;&lt;/a&gt; Refactor TicketHolder::resize() in all implementations&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/fcdfe29cee066278b94ea2749456fc433cc398c6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/fcdfe29cee066278b94ea2749456fc433cc398c6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4754266" author="haley.connelly" created="Tue, 16 Aug 2022 14:36:08 +0000"  >&lt;p&gt;We should be testing the &lt;a href=&quot;https://github.com/10gen/mongo/blob/1887b2c89ea10f24f1e1d9f08637d4af00f67700/src/mongo/util/concurrency/ticketholder.cpp#L138&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;resize()&lt;/a&gt; method since there aren&apos;t existing tests for it.&lt;/p&gt;</comment>
                    </comments>
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                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="2116798">SERVER-68933</issuekey>
        </issuelink>
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