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  1. Minecraft: Java Edition
  2. MC-91621

Mobs repetitively despawn and respawn rapidly at high Y coordinates (causing lag)

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    Details

    • Type: Bug
    • Status: Resolved
    • Resolution: Fixed
    • Affects Version/s: Minecraft 15w44a, Minecraft 15w44b, Minecraft 15w45a, Minecraft 15w46a, Minecraft 15w47a, Minecraft 15w47b, Minecraft 15w47c, Minecraft 15w49a, Minecraft 15w49b, Minecraft 15w50a, Minecraft 15w51a, Minecraft 15w51b, Minecraft 16w02a, Minecraft 16w03a, Minecraft 16w04a, Minecraft 16w05a, Minecraft 16w05b, Minecraft 16w06a, Minecraft 16w07a, Minecraft 16w07b, Minecraft 1.9 Pre-Release 1, Minecraft 1.9 Pre-Release 2, Minecraft 1.9 Pre-Release 3, Minecraft 1.9 Pre-Release 4, Minecraft 1.9, Minecraft 1.9.1 Pre-Release 1, Minecraft 1.9.1 Pre-Release 2, Minecraft 1.9.1 Pre-Release 3, Minecraft 1.9.1, Minecraft 1.9.2, Minecraft 16w14a, Minecraft 16w15a, Minecraft 16w15b, Minecraft 1.9.3 Pre-Release 1, Minecraft 1.9.3 Pre-Release 2, Minecraft 1.9.3 Pre-Release 3, Minecraft 1.9.3, Minecraft 1.9.4, Minecraft 16w20a, Minecraft 16w21a, Minecraft 16w21b, Minecraft 1.10 Pre-Release 1, Minecraft 1.10 Pre-Release 2, Minecraft 1.10, Minecraft 1.10.1, Minecraft 1.10.2, Minecraft 16w32a, Minecraft 16w32b, Minecraft 16w33a, Minecraft 16w35a, Minecraft 16w36a, Minecraft 16w38a, Minecraft 16w39a, Minecraft 16w39b, Minecraft 16w39c, Minecraft 16w40a, Minecraft 16w41a, Minecraft 16w42a, Minecraft 16w43a, Minecraft 16w44a, Minecraft 1.11 Pre-Release 1, Minecraft 1.11, Minecraft 16w50a, Minecraft 1.11.2, Minecraft 17w06a, Minecraft 17w13a, Minecraft 17w13b, Minecraft 17w14a, Minecraft 17w15a, Minecraft 17w16a, Minecraft 17w16b, Minecraft 17w17a, Minecraft 17w17b, Minecraft 17w18a, Minecraft 17w18b, Minecraft 1.12 Pre-Release 1, Minecraft 1.12 Pre-Release 2, Minecraft 1.12 Pre-Release 3, Minecraft 1.12 Pre-Release 4, Minecraft 1.12 Pre-Release 5, Minecraft 1.12 Pre-Release 6, Minecraft 1.12 Pre-Release 7, Minecraft 1.12, Minecraft 1.12.1 Pre-Release 1, Minecraft 1.12.1, Minecraft 1.12.2 Pre-Release 1, Minecraft 1.12.2 Pre-Release 2, Minecraft 1.12.2, Minecraft 17w43a, Minecraft 17w43b, Minecraft 17w45a, Minecraft 17w45b, Minecraft 17w46a, Minecraft 17w47a, Minecraft 17w47b, Minecraft 17w48a, Minecraft 17w49a, Minecraft 17w49b, Minecraft 17w50a, Minecraft 18w01a, Minecraft 18w02a, Minecraft 18w03b, Minecraft 18w05a, Minecraft 18w06a, Minecraft 18w07a, Minecraft 18w07b, Minecraft 18w07c, Minecraft 18w08a, Minecraft 18w08b, Minecraft 18w09a, Minecraft 18w10a, Minecraft 18w10b, Minecraft 18w10c, Minecraft 18w10d, Minecraft 18w11a, Minecraft 18w14a, Minecraft 18w14b, Minecraft 18w15a, Minecraft 1.13-pre1, Minecraft 1.13-pre5, Minecraft 1.13-pre6, Minecraft 1.13, Minecraft 18w30b, Minecraft 18w31a, Minecraft 18w32a, Minecraft 18w33a, Minecraft 1.13.1-pre1, Minecraft 1.13.1-pre2, Minecraft 1.13.1
    • Fix Version/s: Minecraft 1.13.2-pre1
    • Confirmation Status:
      Confirmed

      Description

      Hostile mobs rapidly despawn and respawn repetitively when you're about 125 blocks from the ground. This is easiest to see in the End.

      Video: 0:52~0:58 https://www.youtube.com/watch?v=UgiTzg2jr_A


      Squid spawning causes server to lag.
      Steps to reproduce:
      Render Distance > 16 chunks
      1. Fly high above an ocean around height of 200.
      2. Wait at least a minute.
      3. Fall down and see squid spawning and despawning rapidly everywhere
      At height 200 above a level 46 ocean, the server becomes laggy. The longer you stay above the ocean, the more the squid lag seems to "accumulate". Eventually the lag will dissipate and the squid spawning will go back to normal. An aqua affinity helmet will help you see all the squid spawning/despawning

      These error messages start to pop up if you stay at the 200 height for a while(10 minutes or greater). While an indicator of general lag, the server is fine any other time except when at 200 height above ocean.

      31.12 06:09:28 [Server] INFO [06:09:28] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2414ms behind, skipping 48 tick(s)
      31.12 06:09:09 [Server] INFO [06:09:09] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2180ms behind, skipping 43 tick(s)
      31.12 06:09:03 [Server] INFO [06:09:03] [Server thread/INFO]: Saved the world
      31.12 06:09:03 [Server] INFO [06:09:03] [Server thread/INFO]: Saving...
      31.12 06:09:03 [Server] INFO [06:09:03] [Server thread/INFO]: Saving is already turned on.
      31.12 06:09:03 [Multicraft] Auto-saving world...
      31.12 06:08:51 [Server] INFO [06:08:51] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2156ms behind, skipping 43 tick(s)
      31.12 06:08:36 [Server] INFO [06:08:36] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2383ms behind, skipping 47 tick(s)
      31.12 06:08:21 [Server] INFO [06:08:21] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2091ms behind, skipping 41 tick(s)
      31.12 06:08:06 [Server] INFO [06:08:06] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2775ms behind, skipping 55 tick(s)
      31.12 06:07:49 [Server] INFO [06:07:49] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2298ms behind, skipping 45 tick(s)
      31.12 06:07:46 [Server] INFO [06:07:46] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 14709ms behind, skipping 294 tick(s)
      31.12 06:07:15 [Server] INFO [06:07:15] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 4657ms behind, skipping 93 tick(s)
      31.12 06:07:10 [Server] INFO [06:07:10] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 19226ms behind, skipping 384 tick(s)
      31.12 06:06:37 [Server] INFO [06:06:37] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 7385ms behind, skipping 147 tick(s)
      31.12 06:06:22 [Server] INFO [06:06:22] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 10029ms behind, skipping 200 tick(s)
      31.12 06:05:55 [Server] INFO [06:05:55] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 5317ms behind, skipping 106 tick(s)
      31.12 06:05:33 [Server] INFO [06:05:33] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2275ms behind, skipping 45 tick(s)
      31.12 06:05:11 [Server] INFO [06:05:11] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2067ms behind, skipping 41 tick(s)
      31.12 06:04:49 [Server] INFO [06:04:49] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2003ms behind, skipping 40 tick(s)
      31.12 06:04:17 [Server] INFO [06:04:17] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2059ms behind, skipping 41 tick(s)
      

        Attachments

        1. 2015-10-29_20.07.03.png
          2015-10-29_20.07.03.png
          1.43 MB
        2. 2015-10-29_20.07.14.png
          2015-10-29_20.07.14.png
          1.43 MB
        3. 2015-10-29-2021-55.mp4
          822 kB
        4. overworld.gif
          overworld.gif
          518 kB
        5. profile-results-2018-08-25_15.02.46.txt
          50 kB

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              • Assignee:
                rockenroll4life [Mojang] rockenroll4life (Josh Letellier)
                Reporter:
                Les3awe [Mod] Les3awe
              • Votes:
                91 Vote for this issue
                Watchers:
                39 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved:
                  CHK: