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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-33122] add option to limit WiredTiger cursor cache size</title>
                <link>https://jira.mongodb.org/browse/SERVER-33122</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This change introduces a new setParameter &lt;tt&gt;wiredTigerCursorCacheSize&lt;/tt&gt; with a default value of 10,000.&lt;/p&gt;

&lt;p&gt;When this is set to 0, caching of WiredTiger cursors is disabled. There is an expected and slight performance degradation from the loss of the cache, but resource usage will be lower because we are not keeping as many cursors open at once. This parameter can be safely set at runtime without requiring a restart of the server.&lt;/p&gt;

&lt;p&gt;This will speed up dropDatabase, collection drop, and other operations.&lt;/p&gt;</description>
                <environment></environment>
        <key id="492436">SERVER-33122</key>
            <summary>add option to limit WiredTiger cursor cache size</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="13201">Fixed</resolution>
                                        <assignee username="louis.williams@mongodb.com">Louis Williams</assignee>
                                    <reporter username="ian@mongodb.com">Ian Whalen</reporter>
                        <labels>
                    </labels>
                <created>Mon, 5 Feb 2018 14:43:19 +0000</created>
                <updated>Sun, 29 Oct 2023 22:35:06 +0000</updated>
                            <resolved>Mon, 26 Feb 2018 15:35:33 +0000</resolved>
                                                    <fixVersion>3.4.14</fixVersion>
                    <fixVersion>3.6.4</fixVersion>
                    <fixVersion>3.7.3</fixVersion>
                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>13</watches>
                                                                                                                <comments>
                            <comment id="2039844" author="glajchs" created="Tue, 23 Oct 2018 21:27:51 +0000"  >&lt;p&gt;Thanks Dan!&#160; I swear I looked and googled for a while for that, and of course found it minutes after posting my comment &lt;img class=&quot;emoticon&quot; src=&quot;https://jira.mongodb.org/images/icons/emoticons/sad.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;.&#160; It works great!&lt;/p&gt;</comment>
                            <comment id="2035429" author="dan@10gen.com" created="Thu, 18 Oct 2018 20:24:58 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=glajchs&quot; class=&quot;user-hover&quot; rel=&quot;glajchs&quot;&gt;glajchs&lt;/a&gt;, you should be able to set it like so:&lt;/p&gt;

&lt;p&gt;&lt;tt&gt;./3.4.17/bin/mongod --setParameter wiredTigerCursorCacheSize=0&lt;/tt&gt;&lt;/p&gt;

&lt;p&gt;See the docs on the&#160; &lt;a href=&quot;https://docs.mongodb.com/manual/reference/parameters/#synopsis&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;setParameter&lt;/a&gt; command&lt;/p&gt;</comment>
                            <comment id="2035348" author="glajchs" created="Thu, 18 Oct 2018 18:48:57 +0000"  >&lt;p&gt;How do we use the new &quot;wiredTigerCursorCacheSize&quot; option?&#160; I&apos;m using 3.4.17 (also tried 3.6.5) and I don&apos;t see the option to mongod, and if I provide it, it says it&apos;s invalid.&lt;/p&gt;</comment>
                            <comment id="1907852" author="bruce.lucas@10gen.com" created="Fri, 1 Jun 2018 12:27:59 +0000"  >&lt;p&gt;This change introduces a new parameter wiredTigerCursorCacheSize with a default value of 10,000, which was previously hard-coded.&lt;/p&gt;</comment>
                            <comment id="1816696" author="xgen-internal-githook" created="Mon, 26 Feb 2018 23:02:15 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;louis.williams@mongodb.com&apos;, &apos;name&apos;: &apos;Louis Williams&apos;, &apos;username&apos;: &apos;louiswilliams&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33122&quot; title=&quot;add option to limit WiredTiger cursor cache size&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33122&quot;&gt;&lt;del&gt;SERVER-33122&lt;/del&gt;&lt;/a&gt; Add option to disable WiredTiger cursor caching&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 0ef1e13db4f3d217ddc6de7ffc46842a4fc9889a)&lt;br/&gt;
Branch: v3.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/42ac2a06ab567eb7439073f3a2205ded09c3e50a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/42ac2a06ab567eb7439073f3a2205ded09c3e50a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1816677" author="xgen-internal-githook" created="Mon, 26 Feb 2018 22:49:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;louis.williams@mongodb.com&apos;, &apos;name&apos;: &apos;Louis Williams&apos;, &apos;username&apos;: &apos;louiswilliams&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33122&quot; title=&quot;add option to limit WiredTiger cursor cache size&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33122&quot;&gt;&lt;del&gt;SERVER-33122&lt;/del&gt;&lt;/a&gt; Add option to disable WiredTiger cursor caching&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 0ef1e13db4f3d217ddc6de7ffc46842a4fc9889a)&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/44342899b38d0aced0f498b961fa348ac2ea5a59&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/44342899b38d0aced0f498b961fa348ac2ea5a59&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1815995" author="xgen-internal-githook" created="Mon, 26 Feb 2018 15:28:29 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;louis.williams@mongodb.com&apos;, &apos;name&apos;: &apos;Louis Williams&apos;, &apos;username&apos;: &apos;louiswilliams&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33122&quot; title=&quot;add option to limit WiredTiger cursor cache size&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33122&quot;&gt;&lt;del&gt;SERVER-33122&lt;/del&gt;&lt;/a&gt; Add option to disable WiredTiger cursor caching&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/0ef1e13db4f3d217ddc6de7ffc46842a4fc9889a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/0ef1e13db4f3d217ddc6de7ffc46842a4fc9889a&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="410391">SERVER-30426</issuekey>
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            <issuekey id="474781">SERVER-32424</issuekey>
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