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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>[SERVER-30870] Add FTS Fast Byte Vector Optimization for aarch64</title>
                <link>https://jira.mongodb.org/browse/SERVER-30870</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Unicode FTS Fast Byte Vector optimization which uses vector instructions to manipulate sequence of bytes to improve performance is available for x86_64 and ppc64 but missing for aarch64. &lt;br/&gt;
Ref : &lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/fts/unicode/byte_vector.h#L30&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/master/src/mongo/db/fts/unicode/byte_vector.h#L30&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Request to port Fast Byte vector optimization for aarch64 using &lt;a href=&quot;https://developer.arm.com/technologies/neon/intrinsics&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Neon-intrinsics&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="421260">SERVER-30870</key>
            <summary>Add FTS Fast Byte Vector Optimization for aarch64</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="mark.benvenuto@mongodb.com">Mark Benvenuto</assignee>
                                    <reporter username="Arkeri">Praveen Arkeri</reporter>
                        <labels>
                            <label>Feature</label>
                    </labels>
                <created>Tue, 29 Aug 2017 04:50:00 +0000</created>
                <updated>Mon, 30 Oct 2023 23:13:58 +0000</updated>
                            <resolved>Mon, 7 May 2018 18:15:28 +0000</resolved>
                                    <version>3.5.12</version>
                                    <fixVersion>4.0.0-rc0</fixVersion>
                                    <component>Text Search</component>
                                        <votes>0</votes>
                                    <watches>9</watches>
                                                                                                                <comments>
                            <comment id="1884960" author="xgen-internal-githook" created="Mon, 7 May 2018 18:11:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;daniel.stewart@linaro.org&apos;, &apos;name&apos;: &apos;Daniel Stewart&apos;, &apos;username&apos;: &apos;stewart-daniel&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-30870&quot; title=&quot;Add FTS Fast Byte Vector Optimization for aarch64&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-30870&quot;&gt;&lt;del&gt;SERVER-30870&lt;/del&gt;&lt;/a&gt; Enable Unicode Fast Byte Vector Optimization for arm64&lt;/p&gt;

&lt;p&gt;closes #1222&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b1dbe3e36e9bc3f4a8f0533f7d5faee5baaa5f97&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b1dbe3e36e9bc3f4a8f0533f7d5faee5baaa5f97&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1818985" author="acm" created="Wed, 28 Feb 2018 19:34:55 +0000"  >&lt;p&gt;A GitHub PR is preferred, discussion can happen there. Please make sure you have signed the MongoDB CLA: &lt;a href=&quot;https://www.mongodb.com/legal/contributor-agreement&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://www.mongodb.com/legal/contributor-agreement&lt;/a&gt;. Thanks!&lt;/p&gt;</comment>
                            <comment id="1818979" author="daniel.stewart" created="Wed, 28 Feb 2018 19:30:50 +0000"  >&lt;p&gt;An implementation for AArch64 has been done by a colleague. Should I submit a pull request or post it here for comments?&lt;/p&gt;</comment>
                            <comment id="1701919" author="redbeard0531" created="Tue, 17 Oct 2017 20:51:08 +0000"  >&lt;p&gt;The main whole-system benchmark I used was taken from &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-21690&quot; title=&quot;Text Search - Performance Regression in 3.2.0 RC4&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-21690&quot;&gt;&lt;del&gt;SERVER-21690&lt;/del&gt;&lt;/a&gt;, along with the text indexing components of our sys-perf and mongo-perf benchmark suites. Additionally, I copied the text (just the text, not the HTML) from a wikipedia page that is fairly long in at least English (almost all ascii), German (a mix of ascii and non-ascii) and Japanese (almost no ascii), and ran that through `mongo::unicode::caseFoldAndStripDiacritcs()`. That microbenchmark was never checked in and was mostly used to ensure that the optimizations still worked well will a mix of ascii and non-ascii, and didn&apos;t measurably pessimize non-ascii languages.&lt;/p&gt;</comment>
                            <comment id="1699906" author="arkeri" created="Mon, 16 Oct 2017 16:59:31 +0000"  >&lt;p&gt;Any idea which benchmark was used to evaluate performance impact of Fast Byte Vector optimization?&lt;/p&gt;</comment>
                    </comments>
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                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="225452">SERVER-19936</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="483266">WT-3851</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="519740">WT-4008</issuekey>
        </issuelink>
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                                        <issuelink>
            <issuekey id="421893">SERVER-30896</issuekey>
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