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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>
    </build-info>


<item>
            <title>[SERVER-62183] Support for hostInfo.cpuFrequencyMHz on Graviton</title>
                <link>https://jira.mongodb.org/browse/SERVER-62183</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;hostInfo doesn&apos;t show cpuFrequencyMHz (and some other processor-related information) on Graviton:&lt;/p&gt;

&lt;p&gt;&quot;cpuFrequencyMHz&quot; : &quot;&quot;,&lt;br/&gt;
&quot;cpuFeatures&quot; : &quot;&quot;,&lt;/p&gt;</description>
                <environment></environment>
        <key id="1954234">SERVER-62183</key>
            <summary>Support for hostInfo.cpuFrequencyMHz on Graviton</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-servicearch">Backlog - Service Architecture</assignee>
                                    <reporter username="alex.podelko@mongodb.com">Alex Podelko</reporter>
                        <labels>
                            <label>sa-remove-fv-backlog-22</label>
                    </labels>
                <created>Mon, 20 Dec 2021 14:22:31 +0000</created>
                <updated>Tue, 6 Dec 2022 00:42:56 +0000</updated>
                                                                                                <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="4599706" author="thomas.schubert" created="Tue, 7 Jun 2022 15:15:55 +0000"  >&lt;p&gt;I don&apos;t think it&apos;s particularly urgent. cc &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=bruce.lucas%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;bruce.lucas@mongodb.com&quot;&gt;bruce.lucas@mongodb.com&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4260760" author="JIRAUSER1257325" created="Mon, 20 Dec 2021 22:45:48 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=lauren.lewis&quot; class=&quot;user-hover&quot; rel=&quot;lauren.lewis&quot;&gt;lauren.lewis&lt;/a&gt; We are not getting all information about server physical configuration and this info would be missed everywhere we provide it (diagnostic files/tools, etc.).&lt;/p&gt;</comment>
                            <comment id="4260132" author="JIRAUSER1262719" created="Mon, 20 Dec 2021 18:14:33 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=alex.podelko&quot; class=&quot;user-hover&quot; rel=&quot;alex.podelko&quot;&gt;alex.podelko&lt;/a&gt;&#160;can you provide more information around the impact of this issue?&lt;/p&gt;

&lt;p&gt;cc: &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=shameek.ray&quot; class=&quot;user-hover&quot; rel=&quot;shameek.ray&quot;&gt;shameek.ray&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4259485" author="JIRAUSER1257325" created="Mon, 20 Dec 2021 14:30:06 +0000"  >&lt;p&gt;AWS response on reporting ARM frequency information:&lt;/p&gt;

&lt;p&gt;Unfortunately Arm64 Linux has made a choice not to share the cpu frequency in /proc/cpuinfo. We place it in dmi data (e.g. `sudo dmidecode`) and you can get it via perf (e.g. ` sudo perf stat -e cpu-clock,cycles ..`) as long as that core isn&#8217;t sleeping.&lt;/p&gt;</comment>
                            <comment id="4259484" author="JIRAUSER1257325" created="Mon, 20 Dec 2021 14:29:32 +0000"  >&lt;p&gt;It looks like that info is not reported by Graviton processors the same was as it is reported by Intel processors - and output between commands is rather inconsistent:&lt;/p&gt;

&lt;p&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;ec2-user@ip-10-2-0-100 ~&amp;#93;&lt;/span&gt;$ cat /proc/cpuinfo&lt;br/&gt;
processor : 0&lt;br/&gt;
BogoMIPS : 243.75&lt;br/&gt;
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm lrcpc dcpop asimddp ssbs&lt;br/&gt;
CPU implementer : 0x41&lt;br/&gt;
CPU architecture: 8&lt;br/&gt;
CPU variant : 0x3&lt;br/&gt;
CPU part : 0xd0c&lt;br/&gt;
CPU revision : 1&lt;br/&gt;
...&lt;/p&gt;

&lt;p&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;ec2-user@ip-10-2-0-100 ~&amp;#93;&lt;/span&gt;$ lscpu&lt;br/&gt;
Architecture: aarch64&lt;br/&gt;
Byte Order: Little Endian&lt;br/&gt;
CPU(s): 16&lt;br/&gt;
On-line CPU(s) list: 0-15&lt;br/&gt;
Thread(s) per core: 1&lt;br/&gt;
Core(s) per socket: 16&lt;br/&gt;
Socket(s): 1&lt;br/&gt;
NUMA node(s): 1&lt;br/&gt;
Model: 1&lt;br/&gt;
BogoMIPS: 243.75&lt;br/&gt;
L1d cache: 64K&lt;br/&gt;
L1i cache: 64K&lt;br/&gt;
L2 cache: 1024K&lt;br/&gt;
L3 cache: 32768K&lt;br/&gt;
NUMA node0 CPU(s): 0-15&lt;br/&gt;
Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm lrcpc dcpop asimddp ssbs&lt;/p&gt;

&lt;p&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;ec2-user@ip-10-2-0-100 ~&amp;#93;&lt;/span&gt;$ sudo dmidecode --type processor&lt;/p&gt;

&lt;p&gt;dmidecode 3.0&lt;br/&gt;
Getting SMBIOS data from sysfs.&lt;br/&gt;
SMBIOS 2.7 present.&lt;br/&gt;
Handle 0x0004, DMI type 4, 42 bytes&lt;br/&gt;
Processor Information&lt;br/&gt;
Socket Designation: CPU00&lt;br/&gt;
Type: Central Processor&lt;br/&gt;
Family: &amp;lt;OUT OF SPEC&amp;gt;&lt;br/&gt;
Manufacturer: AWS&lt;br/&gt;
ID: C1 D0 3F 41 00 00 00 00&lt;br/&gt;
Version: AWS Graviton2&lt;br/&gt;
Voltage: Unknown&lt;br/&gt;
External Clock: Unknown&lt;br/&gt;
Max Speed: 2500 MHz&lt;br/&gt;
Current Speed: 2500 MHz&lt;br/&gt;
Status: Populated, Enabled&lt;br/&gt;
Upgrade: None&lt;br/&gt;
L1 Cache Handle: Not Provided&lt;br/&gt;
L2 Cache Handle: Not Provided&lt;br/&gt;
L3 Cache Handle: Not Provided&lt;br/&gt;
Serial Number: AWS Graviton2&lt;br/&gt;
Asset Tag: AWS Graviton2&lt;br/&gt;
Part Number: AWS Graviton2&lt;br/&gt;
Core Count: 16&lt;br/&gt;
Core Enabled: 16&lt;br/&gt;
Thread Count: 16&lt;br/&gt;
Characteristics: None&lt;/p&gt;</comment>
                            <comment id="4259482" author="JIRAUSER1257325" created="Mon, 20 Dec 2021 14:28:46 +0000"  >&lt;p&gt;Copying from STAR-2344 (more details there):&lt;/p&gt;

&lt;p&gt;rs0:PRIMARY&amp;gt; db.hostInfo()&lt;br/&gt;
{&lt;br/&gt;
&quot;system&quot; :&lt;/p&gt;

{ &quot;currentTime&quot; : ISODate(&quot;2021-11-03T20:13:59.682Z&quot;), &quot;hostname&quot; : &quot;ip-10-2-0-100.ec2.internal&quot;, &quot;cpuAddrSize&quot; : 64, &quot;memSizeMB&quot; : NumberLong(63202), &quot;memLimitMB&quot; : NumberLong(63202), &quot;numCores&quot; : 16, &quot;cpuArch&quot; : &quot;aarch64&quot;, &quot;numaEnabled&quot; : false }
&lt;p&gt;,&lt;br/&gt;
&quot;os&quot; :&lt;/p&gt;

{ &quot;type&quot; : &quot;Linux&quot;, &quot;name&quot; : &quot;Amazon Linux release 2 (Karoo)&quot;, &quot;version&quot; : &quot;Kernel 4.14.232-177.418.amzn2.aarch64&quot; }
&lt;p&gt;,&lt;br/&gt;
&quot;extra&quot; : {&lt;br/&gt;
&quot;versionString&quot; : &quot;Linux version 4.14.232-177.418.amzn2.aarch64 (mockbuild@ip-10-0-1-185) (gcc version 7.3.1 20180712 (Red Hat 7.3.1-13) (GCC)) #1 SMP Tue Jun 15 20:58:11 UTC 2021&quot;,&lt;br/&gt;
&quot;libcVersion&quot; : &quot;2.26&quot;,&lt;br/&gt;
&quot;kernelVersion&quot; : &quot;4.14.232-177.418.amzn2.aarch64&quot;,&lt;br/&gt;
&quot;cpuFrequencyMHz&quot; : &quot;&quot;,&lt;br/&gt;
&quot;cpuFeatures&quot; : &quot;&quot;,&lt;br/&gt;
&quot;pageSize&quot; : NumberLong(4096),&lt;br/&gt;
&quot;numPages&quot; : 16179806,&lt;br/&gt;
&quot;maxOpenFiles&quot; : 65535,&lt;br/&gt;
&quot;physicalCores&quot; : 1,&lt;br/&gt;
&quot;mountInfo&quot; : [&lt;/p&gt;
{ &quot;mountId&quot; : 19, &quot;parentId&quot; : 41, &quot;major&quot; : 0, &quot;minor&quot; : 19, &quot;root&quot; : &quot;/&quot;, &quot;mountPoint&quot; : &quot;/sys&quot;, &quot;options&quot; : &quot;rw,nosuid,nodev,noexec,relatime&quot;, &quot;fields&quot; : &quot;shared:6&quot;, &quot;type&quot; : &quot;sysfs&quot;, &quot;source&quot; : &quot;sysfs&quot;, &quot;superOpt&quot; : &quot;rw&quot; }</comment>
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