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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-35159] Track transactions latency and add to serverStatus output</title>
                <link>https://jira.mongodb.org/browse/SERVER-35159</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Once the &lt;tt&gt;OperationLatencyHistogram&lt;/tt&gt; supports tracking transactions latency, we need to update the appropriate histogram counters whenever a transaction commits or aborts. We can do this by calling &lt;tt&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/584ca76de9ee66b3e11987e640f5317ae40975e4/src/mongo/db/stats/top.cpp#L209-L214&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Top::incrementGlobalLatencyStats&lt;/a&gt;&lt;/tt&gt; on abort or commit, with the appropriate arguments to indicate this operation is a transaction, and the total duration of the transaction. The total transaction duration should be available by using the transaction &lt;tt&gt;startTime&lt;/tt&gt; tracked in &lt;tt&gt;TxnStats&lt;/tt&gt; on that transaction&apos;s session.&lt;/p&gt;

&lt;p&gt;Additionally, we will also need to update the &lt;tt&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/be09d7bf0a72f44f8909221f178a70a2cb0a6b68/src/mongo/db/stats/operation_latency_histogram.cpp#L117-L121&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;OperationLatencyHistogram::append&lt;/a&gt;&lt;/tt&gt; method so that it includes transaction latencies in a sub-document with key &lt;tt&gt;&quot;transactions&quot;&lt;/tt&gt;. We want the final serverStatus output to include the transaction latencies in the same format as the current read/write/command latencies, but in an &lt;tt&gt;opLatencies.transactions&lt;/tt&gt; section.&lt;/p&gt;</description>
                <environment></environment>
        <key id="547646">SERVER-35159</key>
            <summary>Track transactions latency and add to serverStatus output</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="nathan.louie">Nathan Louie</assignee>
                                    <reporter username="william.schultz@mongodb.com">William Schultz</reporter>
                        <labels>
                            <label>global-txn-metrics</label>
                    </labels>
                <created>Tue, 22 May 2018 17:18:33 +0000</created>
                <updated>Sun, 29 Oct 2023 22:31:32 +0000</updated>
                            <resolved>Thu, 9 Aug 2018 15:44:24 +0000</resolved>
                                                    <fixVersion>4.1.2</fixVersion>
                                    <component>Diagnostics</component>
                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1977941" author="xgen-internal-githook" created="Thu, 16 Aug 2018 20:22:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;nxlouie&apos;, &apos;email&apos;: &apos;nathan.louie@10gen.com&apos;, &apos;name&apos;: &apos;Nathan Louie&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-35159&quot; title=&quot;Track transactions latency and add to serverStatus output&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-35159&quot;&gt;&lt;del&gt;SERVER-35159&lt;/del&gt;&lt;/a&gt; Track transactions latency and add to serverStatus output&lt;/p&gt;

&lt;p&gt;(cherry picked from commit e75f7fa2231cbd78d82923393de84d72702f9bcf)&lt;br/&gt;
Branch: v4.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/48c0ef6564b153b70ff307818c016c2cc36b3ab8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/48c0ef6564b153b70ff307818c016c2cc36b3ab8&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1971548" author="xgen-internal-githook" created="Thu, 9 Aug 2018 15:41:39 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Nathan Louie&apos;, &apos;email&apos;: &apos;nathan.louie@10gen.com&apos;, &apos;username&apos;: &apos;nxlouie&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-35159&quot; title=&quot;Track transactions latency and add to serverStatus output&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-35159&quot;&gt;&lt;del&gt;SERVER-35159&lt;/del&gt;&lt;/a&gt; Track transactions latency and add to serverStatus output&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e75f7fa2231cbd78d82923393de84d72702f9bcf&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e75f7fa2231cbd78d82923393de84d72702f9bcf&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1971433" author="william.schultz" created="Thu, 9 Aug 2018 14:40:04 +0000"  >&lt;p&gt;Note: in this patch we are also ensuring that we use the same &quot;now&quot; time for recording various timing related transactions metrics.&lt;/p&gt;</comment>
                            <comment id="1945791" author="nathan.louie" created="Thu, 12 Jul 2018 17:25:05 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=kyle.suarez&quot; class=&quot;user-hover&quot; rel=&quot;kyle.suarez&quot;&gt;kyle.suarez&lt;/a&gt; in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-35157&quot; title=&quot;Add transactions latency tracking to OperationLatencyHistogram &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-35157&quot;&gt;&lt;del&gt;SERVER-35157&lt;/del&gt;&lt;/a&gt;:&lt;br/&gt;
If there is a behavioral change, this patch should include testing:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;additional unit tests in db/stats/operation_latency_histogram_test.cpp, or at&lt;br/&gt;
least modifications of the existing ones&lt;/li&gt;
	&lt;li&gt;tests for the collection histograms in&lt;br/&gt;
jstests/core/operation_latency_histogram.js&lt;/li&gt;
	&lt;li&gt;tests for the global histogram in&lt;br/&gt;
jstests/noPassthrough/global_operation_latency_histogram.js&lt;/li&gt;
&lt;/ul&gt;
</comment>
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            <issuekey id="547640">SERVER-35157</issuekey>
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            <issuekey id="551874">SERVER-35300</issuekey>
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