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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-60833] illegal instruction error on Intel(R) Xeon(R) CPU E5-4640</title>
                <link>https://jira.mongodb.org/browse/SERVER-60833</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Starting mongod (community version 5.0.3) results in an immediate illegal instruction error with Intel Xeon E5-4640 CPUs (&lt;a href=&quot;https://ark.intel.com/content/www/us/en/ark/products/64603/intel-xeon-processor-e54640-20m-cache-2-40-ghz-8-00-gts-intel-qpi.html).&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://ark.intel.com/content/www/us/en/ark/products/64603/intel-xeon-processor-e54640-20m-cache-2-40-ghz-8-00-gts-intel-qpi.html).&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment>RHEL 7.9&lt;br/&gt;
Intel(R) Xeon(R) CPU E5-4640 0 @ 2.40GHz</environment>
        <key id="1902985">SERVER-60833</key>
            <summary>illegal instruction error on Intel(R) Xeon(R) CPU E5-4640</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="13202">Works as Designed</resolution>
                                        <assignee username="backlog-server-triage">Backlog - Triage Team</assignee>
                                    <reporter username="torsten.segner@plusserver.com">Torsten Segner</reporter>
                        <labels>
                    </labels>
                <created>Wed, 20 Oct 2021 06:23:58 +0000</created>
                <updated>Fri, 27 Oct 2023 13:52:13 +0000</updated>
                            <resolved>Tue, 26 Oct 2021 12:00:54 +0000</resolved>
                                    <version>5.0.3</version>
                                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="4147811" author="dmitry.agranat" created="Tue, 26 Oct 2021 11:53:03 +0000"  >&lt;p&gt;That&apos;s a good point &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=torsten.segner%40plusserver.com&quot; class=&quot;user-hover&quot; rel=&quot;torsten.segner@plusserver.com&quot;&gt;torsten.segner@plusserver.com&lt;/a&gt;, we&apos;ll need to update our documentation to specifically mention AVX instructions. As a side note, any platform/microarchitecture requirement must be met on both &quot;Guest&quot; and &quot;Host&quot; in a virtualized architecture.&lt;/p&gt;</comment>
                            <comment id="4137386" author="JIRAUSER1262964" created="Thu, 21 Oct 2021 05:46:24 +0000"  >&lt;p&gt;Ah, that explains this.&lt;/p&gt;

&lt;p&gt;Maybe you should add this tiny bit of vital information to the referenced documentation part.&lt;br/&gt;
It only says&lt;/p&gt;
&lt;h4&gt;&lt;a name=&quot;%C2%A0&quot;&gt;&lt;/a&gt;&#160;&lt;/h4&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;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 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;x86_64&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 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;MongoDB requires the following minimum x86_64 microarchitectures: [2]&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 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;For Intel x86_64, MongoDB requires one of:&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&amp;nbsp;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 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;a Sandy Bridge or later Core processor, or a Tiger Lake or later Celeron or Pentium processor.&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 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;For AMD x86_64, MongoDB requires:&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&amp;nbsp;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 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;a Bulldozer or later processor.&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 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;Starting in MongoDB 5.0, mongod, mongos, and the legacy mongo shell no longer support x86_64 platforms which do not meet this minimum microarchitecture requirement.&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;
&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;Since the used Xeon E5-4640 CPU runs by the code name of Sandy Bridge EP, this might suggest they should be compatible when they are not as they lack the needed AVX instructions.&lt;/p&gt;</comment>
                            <comment id="4134690" author="dmitry.agranat" created="Wed, 20 Oct 2021 10:26:59 +0000"  >&lt;p&gt;As of v5.0, prebuilt MongoDB binaries require a processor that supports AVX instructions (for more details, see &lt;a href=&quot;https://docs.mongodb.com/manual/administration/production-notes/#x86_64&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.com/manual/administration/production-notes/#x86_64&lt;/a&gt;). Can you check that both VM and VMWare ESXi 6.5.0 Hypervisor support AVX instructions?&lt;/p&gt;</comment>
                            <comment id="4134679" author="JIRAUSER1262964" created="Wed, 20 Oct 2021 10:14:37 +0000"  >&lt;p&gt;No, it&apos;s a VM running on a VMWare ESXi 6.5.0 Hypervisor&lt;/p&gt;</comment>
                            <comment id="4134641" author="dmitry.agranat" created="Wed, 20 Oct 2021 09:38:50 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=torsten.segner%40plusserver.com&quot; class=&quot;user-hover&quot; rel=&quot;torsten.segner@plusserver.com&quot;&gt;torsten.segner@plusserver.com&lt;/a&gt;, Is it running under a virtual machine in VirtualBox?&lt;/p&gt;</comment>
                            <comment id="4134618" author="JIRAUSER1262964" created="Wed, 20 Oct 2021 09:21:56 +0000"  >&lt;p&gt;Hi Dmitry,&lt;/p&gt;

&lt;p&gt;the exact error is &apos;illegal instruction&apos; - nothing more.&lt;br/&gt;
The daemon immediately exits without further notice in any logs.&lt;br/&gt;
I have searched in /var/log/mongodb/mongod.log, /var/log/messages and journalctl but there is no hint on why it would immediately fail anywhere to be found.&lt;/p&gt;</comment>
                            <comment id="4134436" author="dmitry.agranat" created="Wed, 20 Oct 2021 07:55:33 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=torsten.segner%40plusserver.com&quot; class=&quot;user-hover&quot; rel=&quot;torsten.segner@plusserver.com&quot;&gt;torsten.segner@plusserver.com&lt;/a&gt;, can you please post the exact error you are getting?&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="1909482">DOCS-14894</issuekey>
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