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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-12034] sigxcpu not logged</title>
                <link>https://jira.mongodb.org/browse/SERVER-12034</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;div class=&quot;panel&quot; style=&quot;background-color: #EEEEEE;border-color: #ccc;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelHeader&quot; style=&quot;border-bottom-width: 1px;border-bottom-color: #ccc;background-color: #6CB33F;&quot;&gt;&lt;b&gt;Issue Status as of March 28, 2014&lt;/b&gt;&lt;/div&gt;&lt;div class=&quot;panelContent&quot; style=&quot;background-color: #EEEEEE;&quot;&gt;
&lt;p&gt;&lt;b&gt;ISSUE SUMMARY&lt;/b&gt;&lt;br/&gt;
MongoDB catches a number of signals and then gracefully shuts down with a log message that mentions the caught signal. The SIGXCPU signal (i.e. running out of CPU time limited by ulimits) is currently not caught and therefore looks identical to a hard kill -9 (SIGKILL) in the log file.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;USER IMPACT&lt;/b&gt;&lt;br/&gt;
It is not clear why the server shut down when it receives a SIGXCPU signal. Diagnosing such an issue is therefore harder than it could be.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;SOLUTION&lt;/b&gt;&lt;br/&gt;
Add the SIGXCPU signal to the list of caught signals and quit gracefully with a log message.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;WORKAROUNDS&lt;/b&gt;&lt;br/&gt;
None&lt;/p&gt;

&lt;p&gt;&lt;b&gt;AFFECTED VERSIONS&lt;/b&gt;&lt;br/&gt;
All recent production releases up to version 2.4.9 are affected. &lt;/p&gt;

&lt;p&gt;&lt;b&gt;PATCHES&lt;/b&gt;&lt;br/&gt;
The fix is included in the 2.4.10 production release and the 2.5.5 development version, which will evolve into the 2.6.0 production release.&lt;/p&gt;
&lt;/div&gt;&lt;/div&gt;

&lt;h6&gt;&lt;a name=&quot;OriginalDescription&quot;&gt;&lt;/a&gt;Original Description&lt;/h6&gt;

&lt;p&gt;From a logfile, it&apos;s impossible to tell the difference between a hard kill -9, and running out of cpu time (ie. ulimits), which generates a sigxcpu.  Adding this signal to the list of caught signals would help with diagnosing this problem.&lt;/p&gt;</description>
                <environment></environment>
        <key id="101856">SERVER-12034</key>
            <summary>sigxcpu not logged</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="9">Done</resolution>
                                        <assignee username="charlie.page@10gen.com">Charlie Page</assignee>
                                    <reporter username="kevin.pulo@mongodb.com">Kevin Pulo</reporter>
                        <labels>
                            <label>neweng</label>
                            <label>signals</label>
                    </labels>
                <created>Tue, 10 Dec 2013 23:46:11 +0000</created>
                <updated>Mon, 11 Jul 2016 17:38:27 +0000</updated>
                            <resolved>Tue, 14 Jan 2014 17:15:58 +0000</resolved>
                                                    <fixVersion>2.4.10</fixVersion>
                    <fixVersion>2.5.5</fixVersion>
                                    <component>Logging</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="512127" author="xgen-internal-githook" created="Sun, 9 Mar 2014 15:28:14 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;lissom&apos;, u&apos;name&apos;: u&apos;Charlie Page&apos;, u&apos;email&apos;: u&apos;charlie.page@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12034&quot; title=&quot;sigxcpu not logged&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12034&quot;&gt;&lt;del&gt;SERVER-12034&lt;/del&gt;&lt;/a&gt; Fix bug with SIGXCPU causing a core dump in mongoD/mongoS.&lt;/p&gt;

&lt;p&gt;Graceful shutdown was chosen so we can log the signal; There is no risk&lt;br/&gt;
of data corruption.&lt;/p&gt;

&lt;p&gt;Signed-off-by: Matt Kangas &amp;lt;matt.kangas@mongodb.com&amp;gt;&lt;br/&gt;
Branch: v2.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a7d9059a07c1be3043dae0dcfbabfa0e5a908f9e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a7d9059a07c1be3043dae0dcfbabfa0e5a908f9e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="481163" author="xgen-internal-githook" created="Mon, 13 Jan 2014 19:45:15 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;name&apos;: u&apos;Charlie Page&apos;, u&apos;email&apos;: u&apos;charlie.page@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12034&quot; title=&quot;sigxcpu not logged&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12034&quot;&gt;&lt;del&gt;SERVER-12034&lt;/del&gt;&lt;/a&gt; Fix bug with SIGXCPU causing a core dump in mongoD/mongoS.&lt;/p&gt;

&lt;p&gt;Graceful shutdown was chosen so we can log the signal; There is no risk&lt;br/&gt;
of data corruption.&lt;/p&gt;

&lt;p&gt;Signed-off-by: Matt Kangas &amp;lt;matt.kangas@mongodb.com&amp;gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/adb2c9c330f67e24adbb5f1a306f8484befe93a9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/adb2c9c330f67e24adbb5f1a306f8484befe93a9&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="477150" author="xgen-internal-githook" created="Sat, 4 Jan 2014 02:28:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;kangas&apos;, u&apos;name&apos;: u&apos;Matt Kangas&apos;, u&apos;email&apos;: u&apos;matt.kangas@mongodb.com&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12034&quot; title=&quot;sigxcpu not logged&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12034&quot;&gt;&lt;del&gt;SERVER-12034&lt;/del&gt;&lt;/a&gt; Fix bug with SIGXCPU causing a core dump in mongoD/mongoS.&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit 1168a2605f7351a121f89e64eb7592e91cc869a5.&lt;br/&gt;
Breaks Windows compiles&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/25135aa82d3f54db2dce6ca64781efcdde2e55d0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/25135aa82d3f54db2dce6ca64781efcdde2e55d0&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="477080" author="xgen-internal-githook" created="Fri, 3 Jan 2014 22:56:28 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;name&apos;: u&apos;Charlie Page&apos;, u&apos;email&apos;: u&apos;charlie.page@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12034&quot; title=&quot;sigxcpu not logged&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12034&quot;&gt;&lt;del&gt;SERVER-12034&lt;/del&gt;&lt;/a&gt; Fix bug with SIGXCPU causing a core dump in mongoD/mongoS.&lt;/p&gt;

&lt;p&gt;Graceful shutdown was chosen so we can log the signal; There is no risk&lt;br/&gt;
of data corruption.&lt;/p&gt;

&lt;p&gt;Signed-off-by: Matt Kangas &amp;lt;matt.kangas@mongodb.com&amp;gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1168a2605f7351a121f89e64eb7592e91cc869a5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1168a2605f7351a121f89e64eb7592e91cc869a5&lt;/a&gt;&lt;/p&gt;</comment>
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