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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>[DOCS-12958] Investigate changes in SERVER-42224: Add a server parameter maxValidateMBPerSec to specify max validate throughput per validate command in order to limit I/O and CPU usage</title>
                <link>https://jira.mongodb.org/browse/DOCS-12958</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;    New server parameter that can be set at startup or runtime called &apos;maxValidateMBperSec&apos; which takes an int.&lt;/p&gt;

&lt;p&gt;The parameter ensures that while running the &apos;validate&apos; command, each &apos;validate&apos; command running at that time will limit the amount of data processed to maxValidateMBperSec in order to limit I/O and CPU usage.&lt;/p&gt;

&lt;p&gt;Defaults to 0, which turns off throttling.&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;    This task should add the new server parameter that can be set via the server startup command line invocation and dynamically while the server is running.&lt;/p&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="897392">DOCS-12958</key>
            <summary>Investigate changes in SERVER-42224: Add a server parameter maxValidateMBPerSec to specify max validate throughput per validate command in order to limit I/O and CPU usage</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>
                    </labels>
                <created>Thu, 15 Aug 2019 19:57:54 +0000</created>
                <updated>Mon, 13 Nov 2023 18:17:26 +0000</updated>
                            <resolved>Thu, 5 Mar 2020 19:14:09 +0000</resolved>
                                                    <fixVersion>4.3.1</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>Mon, 9 Mar 2020 00:00:00 +0000</due>
                            <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="3219878" author="xgen-internal-githook" created="Tue, 23 Jun 2020 16:05:25 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Kay Kim&apos;, &apos;email&apos;: &apos;kay.kim@10gen.com&apos;, &apos;username&apos;: &apos;kay-kim&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-12958&quot; title=&quot;Investigate changes in SERVER-42224: Add a server parameter maxValidateMBPerSec to specify max validate throughput per validate command in order to limit I/O and CPU usage&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-12958&quot;&gt;&lt;del&gt;DOCS-12958&lt;/del&gt;&lt;/a&gt;: 4.4 maxValidateMBPerSec parameter&quot; per &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-13681&quot; title=&quot;Undocument background : true&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-13681&quot;&gt;&lt;del&gt;DOCS-13681&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;This reverts commit 629d83a63c897333a593c7d01eec571539dae647.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/06fedf93df3b00bdf8f0ace5aae99f339a4450a7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/06fedf93df3b00bdf8f0ace5aae99f339a4450a7&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3219565" author="kay.kim@10gen.com" created="Tue, 23 Jun 2020 14:44:16 +0000"  >&lt;p&gt;Will revert pert &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-13681&quot; title=&quot;Undocument background : true&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-13681&quot;&gt;&lt;del&gt;DOCS-13681&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2945159" author="xgen-internal-githook" created="Thu, 5 Mar 2020 16:02:44 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Kay Kim&apos;, &apos;username&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-12958&quot; title=&quot;Investigate changes in SERVER-42224: Add a server parameter maxValidateMBPerSec to specify max validate throughput per validate command in order to limit I/O and CPU usage&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-12958&quot;&gt;&lt;del&gt;DOCS-12958&lt;/del&gt;&lt;/a&gt;: 4.4 maxValidateMBPerSec parameter&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/629d83a63c897333a593c7d01eec571539dae647&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/629d83a63c897333a593c7d01eec571539dae647&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2493274" author="dianna.hohensee" created="Mon, 21 Oct 2019 19:10:28 +0000"  >&lt;p&gt;Expanding on the downstream summary:&lt;/p&gt;

&lt;p&gt;maxValidateMBPerSec only affects validate cmds running with [background:true} specified. maxValidateMBPerSec defaults to 0, which is interpreted as off and no throttling will occur. Each validate cmd will obey maxValidateMBPerSec separately. They do not share throttling. So, if maxValidateMBPerSec is set to 5, three concurrently running validate w/ {background:true} cmds will throttle at 15 MB per sec, each staying below 5 MB for itself.&lt;/p&gt;

&lt;p&gt;maxValidateMBPerSec is a startup and runtime server parameter. Already running validate cmds will pick up on a change to maxValidateMBPerSec and act accordingly &amp;#8211; so if a background validate cmd is causing too much performance degradation, the user can set maxValidateMBPerSec such that validation uses less resources.&lt;/p&gt;

&lt;p&gt;maxValidateMBPerSec will have no affect on validate cmds where {background:true} is not specified.&lt;/p&gt;</comment>
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