Affects Version/s: Minecraft 1.13, Minecraft 18w30b, Minecraft 18w31a, Minecraft 18w32a, Minecraft 18w33a, Minecraft 1.13.1-pre1, Minecraft 1.13.1-pre2
Fix Version/s: None
Server-side water updates seem to be roughly 10x slower than in 1.12.
The comparison between 1.12 and 1.13 can be seen in this video by gnembon.
- Create a flat world.
- Execute /fill ~-100 ~ ~ ~100 ~ ~ water
- Wait for the water to flow completely.
- Execute /fill ~-100 ~ ~ ~100 ~ ~ air
When the water is removed I recorded a peak at 81 mspt on 1.13 and a peak at (roughly) 8 mspt on 1.12.2.
This makes flushing mob farms unusable: on my survival world, I get peaks > 150 mspt.
The mspt measurment on 1.12 is a bit tricky as there is no way to measure it properly:
I used /forge tps from Forge mod loader to measure it.