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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-20056] Log a startup warning if wiredTigerCacheSizeGB is &gt; 80% of RAM</title>
                <link>https://jira.mongodb.org/browse/SERVER-20056</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently you can set wiredTigerCacheSizeGB to be 100% of available memory, which will almost certainly lead to problems.&lt;/p&gt;

&lt;p&gt;Perhaps a startup check here to confirm that wiredTigerCacheSizeGB is &amp;lt; 80% of available Memory.&lt;/p&gt;</description>
                <environment></environment>
        <key id="226384">SERVER-20056</key>
            <summary>Log a startup warning if wiredTigerCacheSizeGB is &gt; 80% of RAM</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="9">Done</resolution>
                                        <assignee username="maria.vankeulen@mongodb.com">Maria van Keulen</assignee>
                                    <reporter username="david.hows">David Hows</reporter>
                        <labels>
                            <label>supportgrab2018Q1</label>
                    </labels>
                <created>Thu, 20 Aug 2015 01:51:46 +0000</created>
                <updated>Tue, 24 Apr 2018 00:20:12 +0000</updated>
                            <resolved>Thu, 5 Apr 2018 17:24:55 +0000</resolved>
                                                    <fixVersion>3.4.15</fixVersion>
                    <fixVersion>3.6.5</fixVersion>
                    <fixVersion>3.7.4</fixVersion>
                                    <component>WiredTiger</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1872059" author="xgen-internal-githook" created="Mon, 23 Apr 2018 22:15:49 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;maria@mongodb.com&apos;, &apos;username&apos;: &apos;mvankeulen94&apos;, &apos;name&apos;: &apos;Maria van Keulen&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20056&quot; title=&quot;Log a startup warning if wiredTigerCacheSizeGB is &amp;gt; 80% of RAM&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20056&quot;&gt;&lt;del&gt;SERVER-20056&lt;/del&gt;&lt;/a&gt; Warn when wiredTigerCacheSizeGB is &amp;gt; 80% of RAM&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 657fdff7b50949b50848b1de466c88f7be18034b)&lt;br/&gt;
Branch: v3.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8f92f4f7d2a9f230fc85776cdfaae66a565674b6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8f92f4f7d2a9f230fc85776cdfaae66a565674b6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1872051" author="xgen-internal-githook" created="Mon, 23 Apr 2018 22:08:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;maria@mongodb.com&apos;, &apos;username&apos;: &apos;mvankeulen94&apos;, &apos;name&apos;: &apos;Maria van Keulen&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20056&quot; title=&quot;Log a startup warning if wiredTigerCacheSizeGB is &amp;gt; 80% of RAM&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20056&quot;&gt;&lt;del&gt;SERVER-20056&lt;/del&gt;&lt;/a&gt; Warn when wiredTigerCacheSizeGB is &amp;gt; 80% of RAM&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 657fdff7b50949b50848b1de466c88f7be18034b)&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8b290e94bcee3ed93bc487c3194ad5d88050008c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8b290e94bcee3ed93bc487c3194ad5d88050008c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1856327" author="xgen-internal-githook" created="Thu, 5 Apr 2018 15:13:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;maria@mongodb.com&apos;, &apos;name&apos;: &apos;Maria van Keulen&apos;, &apos;username&apos;: &apos;mvankeulen94&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20056&quot; title=&quot;Log a startup warning if wiredTigerCacheSizeGB is &amp;gt; 80% of RAM&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20056&quot;&gt;&lt;del&gt;SERVER-20056&lt;/del&gt;&lt;/a&gt; Warn when wiredTigerCacheSizeGB is &amp;gt; 80% of RAM&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/657fdff7b50949b50848b1de466c88f7be18034b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/657fdff7b50949b50848b1de466c88f7be18034b&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1131328" author="martin.bligh" created="Mon, 11 Jan 2016 18:19:32 +0000"  >&lt;p&gt;The threshold should be a lot lower than 100. Would suggest our default, 60.&lt;/p&gt;</comment>
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