Hi,

 

I've been having some problems with getPendingBlockUpdates() from the WorldServer class causing excessive lag on a modded Minecraft server. Profiling it simply says that the method itself is the source of lag, no specific mod is named.

 

I was considering disabling the saving of "TileTicks" to world NBT files entirely (http://minecraft.gamepedia.com/Chunk_format#Tile_tick_format).

 

Does anyone know if this would cause serious problems for tile entities, other than redstone being slightly out of sync on a modded server?

I've disabled it and noticed no adverse effects...hopefully nothing happens!

Update: After several days of running the server with TileTick saving completely disabled, I have noticed the following when the server restarts:

• Sand + other blocks that were falling [/i]do not finish falling
  
• Redstone circuits might get "stuck" or reset
  

 

I haven't noticed anything wrong with other Tile Entities, so I think it's safe to say that the effect was minimal. I will provide another update if I find the source of the getPendingBlockUpdates() lag.

Update:

 

There still haven't been any significant negative effects.

Will post another update if anything happens.