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        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-17630] Insert only workload under stress - high resolution timer for query operations consume  ~17% of execution time</title>
                <link>https://jira.mongodb.org/browse/SERVER-17630</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Version &#8211;&lt;br/&gt;
Mongod RC11binaries&lt;/p&gt;

&lt;p&gt;Environment:&lt;/p&gt;

&lt;p&gt;&#8226; Single mongod with wiredtiger as storage engine &lt;br/&gt;
&#8226; Windows 2012 &lt;br/&gt;
&#8226; WriedTiger configured with 1GB cache &lt;br/&gt;
&#8226; EC2 machine c3.large&lt;/p&gt;

&lt;p&gt;Workload:&lt;/p&gt;

&lt;p&gt;&#8226; Used hammer.mongo to do insert only workload&lt;/p&gt;

&lt;p&gt;Issue -&lt;/p&gt;

&lt;p&gt;During insert only workload it&apos;s appear that high resolution counter which responsible to notify if operation take longer then X (100msec default) consume ~17% of execution time (see profiler output in the bitmap)&lt;/p&gt;

&lt;p&gt;When the default of 100 msec logging, it doesn&apos;t justify using this expensive call counter, we should consider cheaper alternative such GetTickCount()&lt;/p&gt;</description>
                <environment></environment>
        <key id="190143">SERVER-17630</key>
            <summary>Insert only workload under stress - high resolution timer for query operations consume  ~17% of execution time</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="2" iconUrl="https://jira.mongodb.org/images/icons/priorities/critical.svg">Critical - P2</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="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="eitan.klein">Eitan Klein</reporter>
                        <labels>
                            <label>28qa</label>
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                <created>Tue, 17 Mar 2015 17:02:53 +0000</created>
                <updated>Thu, 14 Apr 2016 15:19:39 +0000</updated>
                            <resolved>Wed, 18 Mar 2015 20:29:18 +0000</resolved>
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                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="857259" author="eliot" created="Wed, 18 Mar 2015 20:29:18 +0000"  >&lt;p&gt;Functionally same as &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4740&quot; title=&quot;Use monotonic clock sources for Timer&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4740&quot;&gt;&lt;del&gt;SERVER-4740&lt;/del&gt;&lt;/a&gt;.&lt;br/&gt;
Please add some more comments there if you think needed.&lt;/p&gt;</comment>
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                            <attachment id="67928" name="HighCounters.png" size="40027" author="eitan.klein" created="Tue, 17 Mar 2015 17:02:53 +0000"/>
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