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    <title>MongoDB Jira</title>
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    <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>[CDRIVER-1213] Pre-split bulk ops every 1000 documents</title>
                <link>https://jira.mongodb.org/browse/CDRIVER-1213</link>
                <project id="10030" key="CDRIVER">C Driver</project>
                    <description>&lt;p&gt;The TestSmallDocBulkInsert task of the driver benchmarks reveals an inefficiency: as you call mongoc_bulk_operation_insert all docs are appended to the same buffer. In mongoc_bulk_operation_execute, those catenated documents are then split into batches of 1000, the batches have to be copied into &quot;insert&quot; command documents before they&apos;re sent.&lt;/p&gt;

&lt;p&gt;The simplest fix is to pre-split batches: when the current batch has 1000 documents, mongoc_bulk_operation_insert should start a new one.&lt;/p&gt;

&lt;p&gt;Same for updates and deletes.&lt;/p&gt;

&lt;p&gt;A bulk op can be constructed before the driver has selected a server to send it to, or before the driver has connected at all, so the server&apos;s maxWriteBatchSize isn&apos;t known. Assume 1000 for now.&lt;/p&gt;</description>
                <environment></environment>
        <key id="282897">CDRIVER-1213</key>
            <summary>Pre-split bulk ops every 1000 documents</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="jesse@mongodb.com">A. Jesse Jiryu Davis</assignee>
                                    <reporter username="jesse@mongodb.com">A. Jesse Jiryu Davis</reporter>
                        <labels>
                    </labels>
                <created>Wed, 27 Apr 2016 20:33:20 +0000</created>
                <updated>Tue, 29 Aug 2017 22:35:16 +0000</updated>
                            <resolved>Mon, 2 May 2016 20:45:17 +0000</resolved>
                                                    <fixVersion>1.4.0</fixVersion>
                                    <component>Bulk API</component>
                    <component>Performance</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="1252586" author="xgen-internal-githook" created="Mon, 2 May 2016 20:45:09 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;ajdavis&apos;, u&apos;name&apos;: u&apos;A. Jesse Jiryu Davis&apos;, u&apos;email&apos;: u&apos;jesse@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-1213&quot; title=&quot;Pre-split bulk ops every 1000 documents&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-1213&quot;&gt;&lt;del&gt;CDRIVER-1213&lt;/del&gt;&lt;/a&gt; pre-split bulk ops every 1000 docs&lt;/p&gt;

&lt;p&gt;Speeds up mongoc_bulk_operation_execute when it has large numbers of&lt;br/&gt;
small documents, by avoiding the need to split and copy batches of&lt;br/&gt;
documents.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-c-driver/commit/51e966afe10d54318ba727359db100f78cca98c5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-c-driver/commit/51e966afe10d54318ba727359db100f78cca98c5&lt;/a&gt;&lt;/p&gt;</comment>
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                <issuelinks>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="421547">CDRIVER-2259</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="282819">CDRIVER-1212</issuekey>
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