[MC-131102] Massive server lag on Skyblock type maps

Opening the original SkyBlock 2.1 map in 1.13 results in lagspikes on the internal server.
If someone recreates the map with the void biome the lagspikes are gone as in this biome no mobs will spawn. But no mobs == no fun. 😉

Crosschecking the map with 1.12.2 results in a smooth gameplay and no dreaded "Can't keep up!" messages in the log.

As there is no TickProfiler or similar tool for 1.13 yet i can not help any further.

Attachments

logfile_broken_skyblock.txt

Comments 4

tryashtar 2018-06-08T17:01:01Z

Try /debug start, waiting several moments, then /debug stop, and attach the debug log created.

Alexandra Stehr 2018-06-08T17:35:09Z

Here you go, the relevant part, i'll also attach the whole log.
I had to restart the map, forgot to enable cheats in LAN mode.

[19:32:00] [Server thread/INFO]: [bastetfurry: Started debug profiling]
[19:32:00] [Client thread/INFO]: [CHAT] Started debug profiling
[19:32:05] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1.tick.mobSpawner' took aprox 144.432096 ms
[19:32:05] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1.tick' took aprox 147.525585 ms
[19:32:05] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1' took aprox 147.888906 ms
[19:32:05] [Server thread/WARN]: Something's taking too long! 'root.levels' took aprox 148.435599 ms
[19:32:05] [Server thread/WARN]: Something's taking too long! 'root' took aprox 149.247021 ms
[19:32:16] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1.tick.mobSpawner' took aprox 107.086316 ms
[19:32:16] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1.tick' took aprox 108.294168 ms
[19:32:16] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1' took aprox 108.510217 ms
[19:32:16] [Server thread/WARN]: Something's taking too long! 'root.levels' took aprox 108.701431 ms
[19:32:16] [Server thread/WARN]: Something's taking too long! 'root' took aprox 109.101808 ms
[19:32:18] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1.tick' took aprox 100.35125 ms
[19:32:18] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1' took aprox 101.118192 ms
[19:32:18] [Server thread/WARN]: Something's taking too long! 'root.levels' took aprox 101.649513 ms
[19:32:18] [Server thread/WARN]: Something's taking too long! 'root' took aprox 102.133145 ms
[19:32:19] [Server thread/WARN]: Something's taking too long! 'root' took aprox 100.37279 ms
[19:32:21] [Server thread/WARN]: Something's taking too long! 'root' took aprox 100.689844 ms
[19:32:22] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1.tick.mobSpawner' took aprox 102.30632 ms
[19:32:22] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1.tick' took aprox 103.505192 ms
[19:32:22] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1' took aprox 103.69117 ms
[19:32:22] [Server thread/WARN]: Something's taking too long! 'root.levels' took aprox 103.848692 ms
[19:32:22] [Server thread/WARN]: Something's taking too long! 'root' took aprox 104.370673 ms
[19:32:26] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1.tick.mobSpawner' took aprox 101.444243 ms
[19:32:26] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1.tick' took aprox 102.643195 ms
[19:32:26] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1' took aprox 102.841467 ms
[19:32:26] [Server thread/WARN]: Something's taking too long! 'root.levels' took aprox 102.995984 ms
[19:32:26] [Server thread/WARN]: Something's taking too long! 'root' took aprox 103.430898 ms
[19:32:32] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1.tick.mobSpawner' took aprox 104.34367 ms
[19:32:32] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1.tick' took aprox 105.51551 ms
[19:32:32] [Server thread/WARN]: Something's taking too long! 'root.levels.SkyBlock2.1' took aprox 105.700464 ms
[19:32:32] [Server thread/WARN]: Something's taking too long! 'root.levels' took aprox 105.880663 ms
[19:32:32] [Server thread/WARN]: Something's taking too long! 'root' took aprox 106.484804 ms
[19:32:38] [Server thread/INFO]: [bastetfurry: Stopped debug profiling after 37.79 seconds and 420 ticks (11,12 ticks per second)]
[19:32:38] [Client thread/INFO]: [CHAT] Stopped debug profiling after 37.79 seconds and 420 ticks (11,12 ticks per second)

wobst.michael 2018-08-29T12:32:45Z

Please check if that's still an issue for you in the 1.13.1 stable release.

Alexandra Stehr 2018-10-07T11:34:04Z

It seems to be gone now, thanks for the fix!