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    <title>Mojang Studios Jira</title>
    <link>https://bugs.mojang.com</link>
    <description>This file is an XML representation of an issue</description>
    <language>en</language>    <build-info>
        <version>9.12.2</version>
        <build-number>9120002</build-number>
        <build-date>10-01-2024</build-date>
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<item>
            <title>[BDS-9973] Large regular lag spikes introduced in 1.16.100</title>
                <link>https://bugs.mojang.com/browse/BDS-9973</link>
                <project id="11700" key="BDS">Bedrock Dedicated Server</project>
                    <description>&lt;p&gt;After upgrading the Ubuntu server from 1.16.40 to 1.16.100, I am seeing large lag spikes, far more regularly and with longer duration than ever before.&#160; A few times per minute, players will lag for 2-4 seconds, after which the entities will either rapidly jump to their updated positions, or sometimes not move at all.&#160; During the lag spikes, players cannot pick up items, attack mobs, or even open the inventory screen.&lt;/p&gt;

&lt;p&gt;I haven&apos;t changed any aspects of the host machine or environment whatsoever between the before and after.&#160; It must be some behavioral change in the new server version that&apos;s causing this.&lt;/p&gt;</description>
                <environment>Ubuntu 18.04</environment>
        <key id="388078">BDS-9973</key>
            <summary>Large regular lag spikes introduced in 1.16.100</summary>
                <type id="1" iconUrl="https://bugs.mojang.com/secure/viewavatar?size=xsmall&amp;avatarId=18903&amp;avatarType=issuetype">Bug</type>
                                    <status id="5" iconUrl="https://bugs.mojang.com/images/icons/statuses/resolved.png" description="A resolution has been taken, and it is awaiting verification by reporter. From here issues are either reopened, or are closed.">Resolved</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="4">Incomplete</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="Tofulisk">Michael Petter</reporter>
                        <labels>
                    </labels>
                <created>Fri, 20 Nov 2020 07:50:13 +0100</created>
                <updated>Tue, 17 Aug 2021 13:22:44 +0200</updated>
                            <resolved>Tue, 17 Aug 2021 13:22:44 +0200</resolved>
                                    <version>1.16.40</version>
                                                            <votes>2</votes>
                                    <watches>0</watches>
                                                                            <comments>
                            <comment id="1056097" author="JIRAUSER484247" created="Tue, 17 Aug 2021 13:22:44 +0200"  >&lt;p&gt;Cleaning up old tickets: This ticket had been set to &apos;Awaiting Response&apos;, but has not received a response from the reporter (~3 months+) so is being closed as &lt;em&gt;Incomplete&lt;/em&gt;. If you feel this is still a valid issue then please comment, or create a new ticket following the &lt;a href=&quot;http://help.mojang.com/customer/portal/articles/801354-writing-helpful-bug-reports-for-minecraft&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Issue Guidelines&lt;/a&gt; which includes steps to reproduce the problem.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;Quick Links&lt;/b&gt;:&lt;br/&gt;
 &#128211; &lt;a href=&quot;http://help.mojang.com/customer/portal/articles/801354-writing-helpful-bug-reports-for-minecraft&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Issue Guidelines&lt;/a&gt; &#8211; &#128172; &lt;a href=&quot;https://help.minecraft.net/hc/en-us/requests/new&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Mojang Support&lt;/a&gt; &#8211; &#128231; &lt;a href=&quot;https://feedback.minecraft.net/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Suggestions&lt;/a&gt; &#8211; &#128214; &lt;a href=&quot;http://minecraft.gamepedia.com/Minecraft_Wiki&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Minecraft Wiki&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="991125" author="JIRAUSER484247" created="Fri, 14 May 2021 18:07:42 +0200"  >&lt;p&gt;&lt;b&gt;Thank you for your report!&lt;/b&gt;&lt;br/&gt;
 However, this issue has been temporarily closed as &lt;b&gt;&lt;font color=&quot;#ff5722&quot;&gt;Awaiting Response&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;

&lt;p&gt;Is this still an issue in the latest version? If so, can you please add it to the affected versions (or mention it if you are not the reporter).&lt;br/&gt;
This ticket will automatically reopen when you reply.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;Quick Links&lt;/b&gt;:&lt;br/&gt;
 &#128211; &lt;a href=&quot;http://help.mojang.com/customer/portal/articles/801354-writing-helpful-bug-reports-for-minecraft&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Issue Guidelines&lt;/a&gt; &#8211; &#128172; &lt;a href=&quot;https://help.minecraft.net/hc/en-us/requests/new&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Mojang Support&lt;/a&gt; &#8211; &#128231; &lt;a href=&quot;https://feedback.minecraft.net/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Suggestions&lt;/a&gt; &#8211; &#128214; &lt;a href=&quot;http://minecraft.gamepedia.com/Minecraft_Wiki&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Minecraft Wiki&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="857982" author="yayalove2/16/2018" created="Sun, 6 Dec 2020 22:04:26 +0100"  >&lt;p&gt;I can confirm this is happening on my server as well. We started a fresh world with the update. No redstone builds yet, but the lag spikes are terrible! Prior to the update, our old world didn&apos;t significantly lag unless we had 8+ players on at once and we had a lot of redstone contraptions.&#160;&lt;/p&gt;

&lt;p&gt;This is our current server hardware:&lt;/p&gt;

&lt;p&gt;Intel Core i9 9900K up to 5.0 Ghz&lt;br/&gt;
 Unlimited NVMe SSD&lt;br/&gt;
 DDR4 ECC Ram 2133/2400mhz&lt;/p&gt;

&lt;p&gt;Since the update, when only 2-3 players are on, the lag is horrible and the lag spikes seem to be constant and random.&#160;&lt;/p&gt;

&lt;p&gt;As a side note, I did experience tons of lag in a single player world while looking for the new seed for our current world. I was the only one on and in creative mode.&#160;&lt;/p&gt;

&lt;p&gt;&#160;I also want to report that the lag is causing mobs not to spawn, passive or aggressive. We play on hard mode but it&apos;s more like peaceful. The only mobs that spawn normally, that I&apos;ve noticed are drowns. Very few mobs are spawning in the Nether.&#160;&lt;/p&gt;</comment>
                            <comment id="851226" author="JIRAUSER556245" created="Fri, 27 Nov 2020 03:56:35 +0100"  >&lt;p&gt;can confirm, this is happening on my server too. Seems to happen in normal worlds though as well&lt;/p&gt;</comment>
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