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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-61954] Improve decoding performance for BSONColumn</title>
                <link>https://jira.mongodb.org/browse/SERVER-61954</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Revert to input iterator over forward, our use-case doesn&apos;t need forward.&lt;br/&gt;
Improve inlining where possible&lt;br/&gt;
Switch to pre-increment of iterators over post-increment&lt;/p&gt;</description>
                <environment></environment>
        <key id="1944988">SERVER-61954</key>
            <summary>Improve decoding performance for BSONColumn</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="henrik.edin@mongodb.com">Henrik Edin</assignee>
                                    <reporter username="henrik.edin@mongodb.com">Henrik Edin</reporter>
                        <labels>
                    </labels>
                <created>Wed, 8 Dec 2021 13:37:29 +0000</created>
                <updated>Sun, 29 Oct 2023 21:45:14 +0000</updated>
                            <resolved>Sat, 11 Dec 2021 01:03:42 +0000</resolved>
                                                    <fixVersion>5.3.0</fixVersion>
                    <fixVersion>5.2.0-rc1</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4239735" author="xgen-internal-githook" created="Thu, 9 Dec 2021 21:42:32 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Henrik Edin&apos;, &apos;email&apos;: &apos;henrik.edin@mongodb.com&apos;, &apos;username&apos;: &apos;henrikedin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-61954&quot; title=&quot;Improve decoding performance for BSONColumn&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-61954&quot;&gt;&lt;del&gt;SERVER-61954&lt;/del&gt;&lt;/a&gt; Improve decoding performance for BSONColumn&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;Use pre-increment in the bucket unpacker, also cache the end iterator&lt;/li&gt;
	&lt;li&gt;Improve inlining for bsoncolumn_util&lt;/li&gt;
	&lt;li&gt;Cache some more variables so we need to re-calculate less when&lt;br/&gt;
incrementing the iterator&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;(cherry picked from commit 6ea30e6fce2cea6a1080156cf9a5b11037f1fdb1)&lt;br/&gt;
Branch: v5.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/877ddc662f3e83497912c893ebe8854bfa002b8c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/877ddc662f3e83497912c893ebe8854bfa002b8c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4239351" author="xgen-internal-githook" created="Thu, 9 Dec 2021 19:02:16 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Henrik Edin&apos;, &apos;email&apos;: &apos;henrik.edin@mongodb.com&apos;, &apos;username&apos;: &apos;henrikedin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-61954&quot; title=&quot;Improve decoding performance for BSONColumn&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-61954&quot;&gt;&lt;del&gt;SERVER-61954&lt;/del&gt;&lt;/a&gt; Improve decoding performance for BSONColumn&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;Use pre-increment in the bucket unpacker, also cache the end iterator&lt;/li&gt;
	&lt;li&gt;Improve inlining for bsoncolumn_util&lt;/li&gt;
	&lt;li&gt;Cache some more variables so we need to re-calculate less when&lt;br/&gt;
incrementing the iterator&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6ea30e6fce2cea6a1080156cf9a5b11037f1fdb1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6ea30e6fce2cea6a1080156cf9a5b11037f1fdb1&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
</comment>
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