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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-5987] doc_mem_monitor malfunction on Darwin</title>
                <link>https://jira.mongodb.org/browse/SERVER-5987</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;For some reason, we did not implement SystemInfo::getPhysicalRam() on Mac OS.  It returns 0 on that platform (and also on FreeBSD, incidentally).&lt;/p&gt;

&lt;p&gt;The only consumer of this function is DocMemMonitor() in aggregation framework.  It seems to be trying to limit how much physical RAM an operation will take, and uasserts if we exceed some threshold.&lt;/p&gt;

&lt;p&gt;The comment for getPhysicalRam() says:&lt;/p&gt;

&lt;p&gt;	  This should only be used for &quot;advisory&quot; purposes, and not as a hard&lt;br/&gt;
	  value, because this could be deceptive on virtual hosts, and because&lt;br/&gt;
	  this will return zero on platforms that do not support it.&lt;/p&gt;


&lt;p&gt;So it sounds like we shouldn&apos;t be using this function to abort operations in aggregation.  In fact, maybe we should just get rid of the function altogether, since no one else is using it.&lt;/p&gt;</description>
                <environment>Mac OS</environment>
        <key id="40169">SERVER-5987</key>
            <summary>doc_mem_monitor malfunction on Darwin</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="mathias@mongodb.com">Mathias Stearn</assignee>
                                    <reporter username="milkie@mongodb.com">Eric Milkie</reporter>
                        <labels>
                    </labels>
                <created>Fri, 1 Jun 2012 13:53:59 +0000</created>
                <updated>Wed, 10 Dec 2014 23:14:51 +0000</updated>
                            <resolved>Tue, 17 Sep 2013 20:40:52 +0000</resolved>
                                    <version>2.1.1</version>
                                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="427411" author="dan@10gen.com" created="Tue, 17 Sep 2013 20:40:52 +0000"  >&lt;p&gt;this class is deleted.&lt;/p&gt;</comment>
                            <comment id="125108" author="tad" created="Fri, 1 Jun 2012 14:17:20 +0000"  >&lt;p&gt;We also have a ProcessInfo::SystemInfo::collectSystemInfo() routine that gathers information, including memory size (aka &quot;physical RAM&quot;), for the hostInfo command.  The Darwin version of collectSystemInfo (in util/processinfo_darwin.cpp at line 141) does collect &quot;memSize&quot;, (aka &quot;physical RAM&quot;).&lt;/p&gt;</comment>
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