My minecraft server has become an absolute nightmare - help?

Tea_Bag

Re-installed windows 7 x64 and java x64. (not sure of my previous version of java i had installed). minecraft 1.8 server was running fine previously apart from getting "[warning] server time cant keep up blah blah blah" occasionally.

Copied over my server folder and booted it up. the thing is useless now though:(. i re-downloaded the server.exe just in case it was outdated etc. When i/others connect (and it pings fine with static IP to PC set up & ports forwarded) (also my outside IP is static) it takes ages to load the world. you just fall through static for 5 min and then it partially loads the world around you. you also get kicked off after a few min:mad::mad:. blocks occasionally rebuild themselve:eek:s.

server log would say

[ip address disconnected. lost connection]

or sometimes

"[ip address disconnected. generic error]" or

"overflow".

also im being absolutely spammed with the "[warning] cant keep up. did the system time change?" i get that once every minute at least.:mad:

the PC is well capable of running the server, and there are only 5 of us whitelisted. can anyone point me to my error?

currently, with 1 connected user, its reporting 174mb memory used (35% free). Threads 1+1

but ive got 4gb of RAM?


this is seriously doing my head in.

other info:
windows time is set to auto update online.
on 100mb UPC BB
starting the server java app used to take a while loading textures etc but now it just goes:

preparing start region for level 0
preparing start region for level 1
preparing spawn area: 44%
done.

any help guys?

Tea_Bag

anyone?

cherryghost

Well I was about to ask about your connection until I seen additional comments :P

As for the quick loading of the world thats not uncommon once the world has been explored some bit. The loading is actually looking for new chunks to generate. Once you've explored a bit around spawn it gets quicker and quicker to load.

Also if you want the game to use more ram, you have to dynamically assign it more ram.

Open up notepad and type

@Echo off
"C:\Program Files\Java\jre6\bin\java.exe" -Xms3072M -Xmx3072M -jar minecraft_server.jar
pause

You NEED to run the server jar, I dont think minecraft_server.exe works properly with this. Save the text file as a .bat extension and run it instead of running the server jar. The server should run on 3GB RAM (change the xms and xmx values if you want to assign something different, in mb).

Let me know if that's any better

Tea_Bag

Thanks Cherry i read your comment when you made it but i havent had any time lately to even sit infront of my PC to fix this mess. hopefully tonight but lab reports are getting in the way

Tea_Bag

so good news and bad news. your bat script to increase the ram fixed the issue...kinda.
my world before fix - broken
my world after fix - broken
test world before fix - broken
test world after fix - works!

test world after fix - with my world replacing the map files - broken.:(

looks like ive to start again as the whole world was corrupted somehow...


new issue now is that ive changed the port for the new world and forwarded it on the router fine, but i can only connect if i use a direct connection through IP:Port and not add the server. any ideas?