<!-- 
RSS generated by JIRA (9.7.1#970001-sha1:2222b88b221c4928ef0de3161136cc90c8356a66) at Thu Feb 08 04:14:15 UTC 2024

It is possible to restrict the fields that are returned in this document by specifying the 'field' parameter in your request.
For example, to request only the issue key and summary append 'field=key&field=summary' to the URL of your request.
-->
<rss version="0.92" >
<channel>
    <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-27132] Mongo response time increased in 15-20% after upgrade to 3.2.10</title>
                <link>https://jira.mongodb.org/browse/SERVER-27132</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We have upgraded our replica set from 3.0 to 3.2.9 and then to 3.2.10 six month ago (see ticket #&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-26386&quot; title=&quot;Application Response Times Sky Rockets After Switching To A Freshly Upgraded 3.2.9 Primary Node - Cursor Exhaustion Spotted&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-26386&quot;&gt;&lt;del&gt;SERVER-26386&lt;/del&gt;&lt;/a&gt; with you),  &lt;br/&gt;
And we notice that ever since that upgrade the response time from the replica set has increased significantly.&lt;br/&gt;
Plus we are experiencing spikes in the response time which weren&apos;t present prior to the upgrade.&lt;/p&gt;

&lt;p&gt;Enclosed please find are logs files for the last week, where this symptom continued&lt;br/&gt;
Plus the diagnostic files from our primary replica.&lt;/p&gt;

&lt;p&gt;We wish to try and  understand with you,&lt;br/&gt;
Could it a buggy behaviour, same as the one that made us upgrade from 3.2.9 or simply a configuration issue that requires us to do some adjustments?&lt;/p&gt;

&lt;p&gt;We were expecting to upgrade to improve performance measured by response time, rather that decrease it, as you can understand.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Avraham Kalvo&lt;br/&gt;
WiX DBA&lt;/p&gt;</description>
                <environment></environment>
        <key id="333123">SERVER-27132</key>
            <summary>Mongo response time increased in 15-20% after upgrade to 3.2.10</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="kelsey.schubert@mongodb.com">Kelsey Schubert</assignee>
                                    <reporter username="avrahamk">Avraham Kalvo</reporter>
                        <labels>
                    </labels>
                <created>Sun, 20 Nov 2016 09:51:12 +0000</created>
                <updated>Tue, 6 Dec 2016 22:58:25 +0000</updated>
                            <resolved>Tue, 6 Dec 2016 21:58:14 +0000</resolved>
                                    <version>3.2.10</version>
                                                    <component>WiredTiger</component>
                                        <votes>0</votes>
                                    <watches>11</watches>
                                                                                                                <comments>
                            <comment id="1450776" author="thomas.schubert" created="Tue, 6 Dec 2016 21:58:15 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=avrahamk&quot; class=&quot;user-hover&quot; rel=&quot;avrahamk&quot;&gt;avrahamk&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;I&apos;ve examined the diagnostic.data you&apos;ve provided. Unfortunately, without a benchmark it is challenging to identify the cause of the increase in response time. The spikes in the response time  may be caused by the application layer. For example, I see some spikes occur when a large number of aggregation commands received by MongoDB. For suggestions on how to improve your application layer, please post on the &lt;a href=&quot;http://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-users group&lt;/a&gt; or &lt;a href=&quot;http://stackoverflow.com/questions/tagged/mongodb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Stack Overflow with the &lt;tt&gt;mongodb&lt;/tt&gt; tag&lt;/a&gt;. A question like this involving more discussion would be best posted on the mongodb-users group.&lt;/p&gt;

&lt;p&gt;Since there isn&apos;t enough information here for us to modify the our codebase to improve performance, I&apos;m going to close this ticket.&lt;/p&gt;

&lt;p&gt;If you can generate a workload that demonstrates this issue between MongoDB 3.2.10 and earlier versions, please let us know. We are continually working to improve the performance of WiredTiger and would be able to benchmark our performance against your workload.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                            <comment id="1438419" author="avrahamk" created="Sun, 20 Nov 2016 11:48:38 +0000"  >&lt;p&gt;Enclosed please find are the files discussed,&lt;br/&gt;
I&apos;ve attached a log excerpt which demonstrates this behaviour.&lt;/p&gt;

&lt;p&gt;Trying to look and see whether we have log files to compare with other than the ones reported on the 3.2.9 -&amp;gt; 3.2.10   (reported here by)&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Avi K&lt;/p&gt;</comment>
                            <comment id="1438408" author="avrahamk" created="Sun, 20 Nov 2016 09:59:46 +0000"  >&lt;p&gt;Log files and diagnostics to follow soon&lt;/p&gt;</comment>
                            <comment id="1438407" author="avrahamk" created="Sun, 20 Nov 2016 09:55:48 +0000"  >&lt;p&gt;Enclosed please find is the deterioration experienced in response time ever since the upgrade,&lt;br/&gt;
notice the change ever since the beginning of October.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Avi K&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="319829">SERVER-26386</issuekey>
        </issuelink>
                            </outwardlinks>
                                                        </issuelinktype>
                    </issuelinks>
                <attachments>
                            <attachment id="144502" name="Screen Shot 2016-11-20 at 11.53.43 AM.png" size="62718" author="avrahamk" created="Sun, 20 Nov 2016 09:54:09 +0000"/>
                            <attachment id="144504" name="diagnostic.data.tar.gz" size="114698743" author="avrahamk" created="Sun, 20 Nov 2016 11:05:51 +0000"/>
                            <attachment id="144503" name="mongodb_public_media.log.4.tar.gz" size="30043066" author="avrahamk" created="Sun, 20 Nov 2016 11:05:20 +0000"/>
                    </attachments>
                <subtasks>
                    </subtasks>
                <customfields>
                                                <customfield id="customfield_10050" key="com.atlassian.jira.toolkit:comments">
                        <customfieldname># Replies</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>4.0</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_18555" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname># of Sprints</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1.0</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    <customfield id="customfield_10055" key="com.atlassian.jira.ext.charting:firstresponsedate">
                        <customfieldname>Date of 1st Reply</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>Mon, 28 Nov 2016 19:18:10 +0000</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10052" key="com.atlassian.jira.toolkit:dayslastcommented">
                        <customfieldname>Days since reply</customfieldname>
                        <customfieldvalues>
                                        7 years, 10 weeks, 1 day ago
    
                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_18254" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Dependencies</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue><![CDATA[]]></customfieldvalue>


                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_15850" key="com.atlassian.jira.plugins.jira-development-integration-plugin:devsummary">
                        <customfieldname>Development</customfieldname>
                        <customfieldvalues>
                            
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            <customfield id="customfield_10057" key="com.atlassian.jira.toolkit:lastusercommented">
                        <customfieldname>Last comment by Customer</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>true</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                            <customfield id="customfield_10056" key="com.atlassian.jira.toolkit:lastupdaterorcommenter">
                        <customfieldname>Last commenter</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>michael.cahill@mongodb.com</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_11151" key="com.atlassian.jira.toolkit:LastCommentDate">
                        <customfieldname>Last public comment date</customfieldname>
                        <customfieldvalues>
                            7 years, 10 weeks, 1 day ago
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                    <customfield id="customfield_10051" key="com.atlassian.jira.toolkit:participants">
                        <customfieldname>Participants</customfieldname>
                        <customfieldvalues>
                                        <customfieldvalue>avrahamk</customfieldvalue>
            <customfieldvalue>kelsey.schubert@mongodb.com</customfieldvalue>
    
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                        <customfield id="customfield_14254" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Product Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|hrjqaf:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                <customfield id="customfield_12550" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>2|hss2dr:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10558" key="com.pyxis.greenhopper.jira:gh-global-rank">
                        <customfieldname>Rank (Obsolete)</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>9223372036854775807</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                            <customfield id="customfield_23361" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Requested By</customfieldname>
                        <customfieldvalues>
                                

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                        <customfield id="customfield_10557" key="com.pyxis.greenhopper.jira:gh-sprint">
                        <customfieldname>Sprint</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue id="1395">Storage 2016-12-12</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                            <customfield id="customfield_10053" key="com.atlassian.jira.ext.charting:timeinstatus">
                        <customfieldname>Time In Status</customfieldname>
                        <customfieldvalues>
                            
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <customfield id="customfield_22870" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Triagers</customfieldname>
                        <customfieldvalues>
                                    <customfieldvalue><![CDATA[kelsey.schubert@mongodb.com]]></customfieldvalue>
    

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                    <customfield id="customfield_14350" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>serverRank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|hs4ovj:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                    </customfields>
    </item>
</channel>
</rss>