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    <title>MongoDB Jira</title>
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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-24139] Insert speed decrease rapidly</title>
                <link>https://jira.mongodb.org/browse/SERVER-24139</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Machine: 24cores, 64GB memory, 1T ssd&lt;br/&gt;
Mongo: 3.2.5 WT engine (default config)&lt;br/&gt;
using YCSB to insert 130million records (length 256Byte), in the first 40mins, 8~9wQPS, then the thoughout decrease to 1~2wQPS.&lt;br/&gt;
we record the mongostat below&lt;/p&gt;</description>
                <environment></environment>
        <key id="286450">SERVER-24139</key>
            <summary>Insert speed decrease rapidly</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>
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                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="kelsey.schubert@mongodb.com">Kelsey Schubert</assignee>
                                    <reporter username="hustchensi">chensi</reporter>
                        <labels>
                    </labels>
                <created>Fri, 13 May 2016 09:21:52 +0000</created>
                <updated>Thu, 14 Jul 2016 15:32:26 +0000</updated>
                            <resolved>Thu, 14 Jul 2016 15:32:26 +0000</resolved>
                                    <version>3.2.5</version>
                                                    <component>WiredTiger</component>
                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="1324083" author="thomas.schubert" created="Thu, 14 Jul 2016 15:32:13 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=hustchensi&quot; class=&quot;user-hover&quot; rel=&quot;hustchensi&quot;&gt;hustchensi&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Sorry for the silence, we&apos;ve examined the diagnostic data you have provided and determined that the behavior you are observing will most likely be corrected by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-24580&quot; title=&quot;Improve performance when WiredTiger cache is full&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-24580&quot;&gt;&lt;del&gt;SERVER-24580&lt;/del&gt;&lt;/a&gt; included in MongoDB 3.2.8, which significantly improves performance when the WiredTiger cache is full.&lt;/p&gt;

&lt;p&gt;I would recommend upgrading to MongoDB 3.2.8, and confirming that this issue is resolved. If you still encounter this issue after upgrading please comment and we will reopen this ticket.&lt;/p&gt;

&lt;p&gt;Thank you,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                            <comment id="1264407" author="hustchensi" created="Mon, 16 May 2016 02:24:56 +0000"  >&lt;p&gt;If i change a new collection for insert, it can recover to 8~9wQPS.&lt;/p&gt;</comment>
                            <comment id="1263530" author="ramon.fernandez" created="Fri, 13 May 2016 13:24:12 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=hustchensi&quot; class=&quot;user-hover&quot; rel=&quot;hustchensi&quot;&gt;hustchensi&lt;/a&gt;, can you please upload the contents of the &lt;tt&gt;diagnostics.data&lt;/tt&gt; directory from your &lt;tt&gt;dbpath&lt;/tt&gt;?&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Ram&#243;n.&lt;/p&gt;</comment>
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                            <attachment id="121685" name="256B_13000W" size="6135985" author="hustchensi" created="Fri, 13 May 2016 09:21:52 +0000"/>
                            <attachment id="121859" name="metrics.2016-05-12T06-39-43Z-00000" size="10463034" author="hustchensi" created="Mon, 16 May 2016 02:15:56 +0000"/>
                            <attachment id="121858" name="metrics.2016-05-12T17-29-53Z-00000" size="10480476" author="hustchensi" created="Mon, 16 May 2016 02:15:56 +0000"/>
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