Downtime

[Yukar9]

I just came home to find people complaining about lag.

I'm 99% sure I've found the problem, but it'll probably take me a bit to fix. Please expect 15-30 minutes downtime. I apologize beforehand.

[Yukar9]

I thought I had the problem, but apparently not. Gonna take it down again to let me work freely.

[Yukar9]

Okay, I think I found the problem. Removing the world/data folder caused the memory usage to drop to about 400MB.

I couldn't find any documentation on what the folder does (google just leads me to people asking where to find the minecraft APPDATA folder is,) but I think it's extra data about the world, mobs/dropped items probably. I'm gonna try looking through the files see if I can find anything abnormal, if anybody has any knowledge about this folder, please do tell.

[SilasOfBorg]

Here's mine, from a fairly well lived in world (nothing like simplicity ofc but it's been up forever with 3-4 people on it):

Code: Select all

 Directory of G:\share\Minecraft\Beta\Hobbiton\data

28/09/2013  10:21 PM    <DIR>          .
28/09/2013  10:21 PM    <DIR>          ..
27/08/2011  03:39 PM                12 idcounts.dat
05/10/2011  09:13 PM             2,918 map_0.dat
08/06/2011  08:02 PM             1,141 map_1.dat
16/08/2011  02:28 PM               578 map_2.dat
28/08/2011  01:19 PM               635 map_3.dat
29/09/2013  01:35 PM            65,426 Mineshaft.dat
28/09/2013  10:21 PM               193 Temple.dat
28/09/2013  10:21 PM               608 Village.dat
29/09/2013  01:50 PM                55 villages.dat
               9 File(s)         71,566 bytes

[Yukar9]

Mine's nearly identical, except we also have a Fortress.dat, and we have about 600 maps.

I really wonder why it would make it lag like that.

[LoneSoldier55]

Probably poorly optimized java code.

[SilasOfBorg]

Probably poorly optimized java code.

Yukar had mentioned that the server was taking up 6 GB RAM at the time, which is way too much.

Did you get a stack dump or java core, Yukar? I'm pretty good with either.

[Yukar9]

Deleted, sorry.

[SilasOfBorg]

Nuts. Ah well, probably one of the many bugs Mojang introduced to Minecraft with the 1.6.x updates.