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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-31903] after repset add member , server become very slow </title>
                <link>https://jira.mongodb.org/browse/SERVER-31903</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I have a 3.2.0 mongodb repset run on ubuntu Ubuntu 14.04.3 LTS. &lt;br/&gt;
have one primary and 3 SECONDARY and one arbiter.  &lt;br/&gt;
when I add 3 member, the primary become more and more slow query log. and almost all slow query cost time in get lock.&lt;br/&gt;
when I remove new member, and restart the primary server, all ok!&lt;br/&gt;
attachment is the primary log. &lt;/p&gt;
</description>
                <environment></environment>
        <key id="457020">SERVER-31903</key>
            <summary>after repset add member , server become very slow </summary>
                <type id="6" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Question</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="9">Done</resolution>
                                        <assignee username="mark.agarunov">Mark Agarunov</assignee>
                                    <reporter username="hmy">hmy</reporter>
                        <labels>
                    </labels>
                <created>Fri, 10 Nov 2017 10:28:57 +0000</created>
                <updated>Fri, 26 Jan 2018 16:43:18 +0000</updated>
                            <resolved>Tue, 26 Dec 2017 20:49:19 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="1756423" author="hmy" created="Wed, 20 Dec 2017 03:04:30 +0000"  >&lt;p&gt;ok, thank you!&lt;/p&gt;</comment>
                            <comment id="1740651" author="mark.agarunov" created="Fri, 1 Dec 2017 23:12:12 +0000"  >&lt;p&gt;Hello &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=hmy&quot; class=&quot;user-hover&quot; rel=&quot;hmy&quot;&gt;hmy&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for the information. I believe this behavior may be caused by a few factors. There appears to be 90 &lt;tt&gt;listCollections&lt;/tt&gt; operations per second, each of which causes a lock and degrades the performance. Additionally, mongod looks to be version 3.2.0, which is lacking many performance improvements that were made in later versions, in addition to improved diagnostics. My recommendation would be to upgrade to the latest version of MongoDB 3.2, which is currently 3.2.18, and see if the behavior persists. &lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Mark&lt;/p&gt;</comment>
                            <comment id="1723741" author="hmy" created="Mon, 13 Nov 2017 05:32:21 +0000"  >&lt;p&gt;10.3.16.6 is the master&lt;/p&gt;

&lt;p&gt;10.3.16.9 , 10.3.20.168,10.3.16.170 is the new slave node. &lt;span class=&quot;nobr&quot;&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/attachment/170734/170734_10.3.16.6.tgz&quot; title=&quot;10.3.16.6.tgz attached to SERVER-31903&quot;&gt;10.3.16.6.tgz&lt;sup&gt;&lt;img class=&quot;rendericon&quot; src=&quot;https://jira.mongodb.org/images/icons/link_attachment_7.gif&quot; height=&quot;7&quot; width=&quot;7&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/sup&gt;&lt;/a&gt;&lt;/span&gt;  &lt;span class=&quot;nobr&quot;&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/attachment/170735/170735_10.3.16.9.tgz&quot; title=&quot;10.3.16.9.tgz attached to SERVER-31903&quot;&gt;10.3.16.9.tgz&lt;sup&gt;&lt;img class=&quot;rendericon&quot; src=&quot;https://jira.mongodb.org/images/icons/link_attachment_7.gif&quot; height=&quot;7&quot; width=&quot;7&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/sup&gt;&lt;/a&gt;&lt;/span&gt;  &lt;span class=&quot;nobr&quot;&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/attachment/170736/170736_10.3.16.61.tgz&quot; title=&quot;10.3.16.61.tgz attached to SERVER-31903&quot;&gt;10.3.16.61.tgz&lt;sup&gt;&lt;img class=&quot;rendericon&quot; src=&quot;https://jira.mongodb.org/images/icons/link_attachment_7.gif&quot; height=&quot;7&quot; width=&quot;7&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/sup&gt;&lt;/a&gt;&lt;/span&gt;  &lt;span class=&quot;nobr&quot;&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/attachment/170737/170737_10.3.16.62.tgz&quot; title=&quot;10.3.16.62.tgz attached to SERVER-31903&quot;&gt;10.3.16.62.tgz&lt;sup&gt;&lt;img class=&quot;rendericon&quot; src=&quot;https://jira.mongodb.org/images/icons/link_attachment_7.gif&quot; height=&quot;7&quot; width=&quot;7&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/sup&gt;&lt;/a&gt;&lt;/span&gt;  &lt;span class=&quot;nobr&quot;&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/attachment/170738/170738_10.3.20.144.tgz&quot; title=&quot;10.3.20.144.tgz attached to SERVER-31903&quot;&gt;10.3.20.144.tgz&lt;sup&gt;&lt;img class=&quot;rendericon&quot; src=&quot;https://jira.mongodb.org/images/icons/link_attachment_7.gif&quot; height=&quot;7&quot; width=&quot;7&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/sup&gt;&lt;/a&gt;&lt;/span&gt;  &lt;span class=&quot;nobr&quot;&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/attachment/170739/170739_10.3.20.168.tgz&quot; title=&quot;10.3.20.168.tgz attached to SERVER-31903&quot;&gt;10.3.20.168.tgz&lt;sup&gt;&lt;img class=&quot;rendericon&quot; src=&quot;https://jira.mongodb.org/images/icons/link_attachment_7.gif&quot; height=&quot;7&quot; width=&quot;7&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/sup&gt;&lt;/a&gt;&lt;/span&gt;  &lt;span class=&quot;nobr&quot;&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/attachment/170740/170740_10.3.20.170.tgz&quot; title=&quot;10.3.20.170.tgz attached to SERVER-31903&quot;&gt;10.3.20.170.tgz&lt;sup&gt;&lt;img class=&quot;rendericon&quot; src=&quot;https://jira.mongodb.org/images/icons/link_attachment_7.gif&quot; height=&quot;7&quot; width=&quot;7&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/sup&gt;&lt;/a&gt;&lt;/span&gt; &lt;/p&gt;</comment>
                            <comment id="1722736" author="mark.agarunov" created="Fri, 10 Nov 2017 17:04:18 +0000"  >&lt;p&gt;Hello &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=hmy&quot; class=&quot;user-hover&quot; rel=&quot;hmy&quot;&gt;hmy&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for the report. To get a better idea of what may be causing this, could you please provide the following:&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;The complete log files from the secondary which is causing this when added to the replicaset&lt;/li&gt;
	&lt;li&gt;An archive (tar or zip) of the &lt;tt&gt;$dbpath/diagnostic.data&lt;/tt&gt; directory from both the primary and the secondary&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;This should give some insight into what may be causing this.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Mark&lt;/p&gt;</comment>
                            <comment id="1722401" author="hmy" created="Fri, 10 Nov 2017 10:30:33 +0000"  >&lt;p&gt;even the hearbeat is log into slow query log.&lt;/p&gt;</comment>
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