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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-84002] Benchmark and compare oplog writing performance w.r.t batch size and thread number</title>
                <link>https://jira.mongodb.org/browse/SERVER-84002</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This ticket should try to answer the following question by doing benchmarks for oplog writes:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;For single thread oplog writes, how does the batch size (in terms of number of entries as well as total byte size) impact the performance?&lt;/li&gt;
	&lt;li&gt;For certain batch sizes (likely those big ones), what is the performance difference between writing the whole batch with 1 thread in one storage transaction vs. &lt;a href=&quot;https://github.com/10gen/mongo/blob/ff3d89d9de85f945da57d44ae0461eb09cfd6a1c/src/mongo/db/repl/oplog_applier_impl.cpp#L665-L728&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;splitting the batch to write using multiple threads&lt;/a&gt;.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;The performance can also be impacted by the type of workloads (e.g. the type of the operation: insert, update, delete; the size of each operation, etc), so the benchmarks should include different types of workloads. We can even mimic some industry benchmark workloads such as the &lt;a href=&quot;https://github.com/10gen/performance-tooling-docs/blob/main/workloads/YCSB%20Tests.md#overview&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;YCSB workload&lt;/a&gt; that are used in sys-perf.&lt;/p&gt;

&lt;p&gt;We should write a report to summarize the findings and benchmark results.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2519748">SERVER-84002</key>
            <summary>Benchmark and compare oplog writing performance w.r.t batch size and thread number</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="kishore.devireddy@mongodb.com">Kishore Devireddy</assignee>
                                    <reporter username="wenbin.zhu@mongodb.com">Wenbin Zhu</reporter>
                        <labels>
                            <label>auto-reverted</label>
                    </labels>
                <created>Fri, 8 Dec 2023 07:39:52 +0000</created>
                <updated>Thu, 18 Jan 2024 18:57:55 +0000</updated>
                            <resolved>Thu, 18 Jan 2024 18:57:54 +0000</resolved>
                                                    <fixVersion>7.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="6023425" author="JIRAUSER1275243" created="Thu, 18 Jan 2024 18:57:55 +0000"  >&lt;p&gt;fixed&lt;/p&gt;</comment>
                            <comment id="6023423" author="JIRAUSER1275243" created="Thu, 18 Jan 2024 18:57:24 +0000"  >&lt;p&gt;added to commit queue&lt;/p&gt;</comment>
                            <comment id="6023393" author="xgen-internal-githook" created="Thu, 18 Jan 2024 18:47:42 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Kishore Devireddy&apos;, &apos;email&apos;: &apos;kishore.devireddy@mongodb.com&apos;, &apos;username&apos;: &apos;kishorekrd&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-84002&quot; title=&quot;Benchmark and compare oplog writing performance w.r.t batch size and thread number&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-84002&quot;&gt;&lt;del&gt;SERVER-84002&lt;/del&gt;&lt;/a&gt; Benchmark test for Oplog writing&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: 7a104227ad1e4443b89ffeb4a27a998120c6c7a4&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b32b139dc12a345040088f769ac769650ea82011&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b32b139dc12a345040088f769ac769650ea82011&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="6011048" author="xgen-internal-githook" created="Mon, 15 Jan 2024 06:16:39 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;auto-revert-processor&apos;, &apos;email&apos;: &apos;dev-prod-dag@mongodb.com&apos;, &apos;username&apos;: &apos;&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-84002&quot; title=&quot;Benchmark and compare oplog writing performance w.r.t batch size and thread number&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-84002&quot;&gt;&lt;del&gt;SERVER-84002&lt;/del&gt;&lt;/a&gt; Benchmark test for Oplog writing (#17819)&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit 5b47850f433a187b86057600293def3c6fff8023.&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: 4f48791a9a805a0384070ee2d016e35ae7630d1e&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/98e1262d7ac42c23eaed7af68df2fadf511cc808&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/98e1262d7ac42c23eaed7af68df2fadf511cc808&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="6009866" author="JIRAUSER1275243" created="Sat, 13 Jan 2024 20:10:18 +0000"  >&lt;p&gt;Here is the report for oplog writing benchmark testing&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://docs.google.com/document/d/15xRSdU0U9k8JtqSOa3Z9rAeB2eNgxqyqIJr5IvcNdR4/edit?usp=sharing&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.google.com/document/d/15xRSdU0U9k8JtqSOa3Z9rAeB2eNgxqyqIJr5IvcNdR4/edit?usp=sharing&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="6009794" author="xgen-internal-githook" created="Sat, 13 Jan 2024 17:39:19 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Kishore Devireddy&apos;, &apos;email&apos;: &apos;69813967+kishorekrd@users.noreply.github.com&apos;, &apos;username&apos;: &apos;kishorekrd&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-84002&quot; title=&quot;Benchmark and compare oplog writing performance w.r.t batch size and thread number&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-84002&quot;&gt;&lt;del&gt;SERVER-84002&lt;/del&gt;&lt;/a&gt; Benchmark test for Oplog writing (#17819)&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: 5b47850f433a187b86057600293def3c6fff8023&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5ef276c41d15571d4c46ddcff9dbcc756b39fb88&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5ef276c41d15571d4c46ddcff9dbcc756b39fb88&lt;/a&gt;&lt;/p&gt;</comment>
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