Hi, i'm running a minecraft server with a fairly large map, and recently the server has just startet laging, ingame and in console. Then players get disconnected and cant reconnect. It seems to be the map we've been using, as cb runs fine with a new map (for 48 hours now, and all plugins we use). The problem is that we spent many hours on this map: (link to last backup) http://map.thorcraft.no/minecraft.20110312-0000.tar.bz2 We've tried several different builds since cb supported 1.3 with no luck, and even vanilla minecraft server, we get 10 minutes at the most, before the server lags, and clients disconnect. So i do understand that craftbukkit is not the issue here, but I'm humbly asking for your help, maybe some of you could download the map an take a look. Hardware specs: Intel(R) Xeon(R) CPU L5508 @ 2.00GHz 4GB RAM Plenty of disk space Software: Ubuntu Server Linux minecraft 2.6.32-29-generic #58-Ubuntu SMP Fri Feb 11 20:52:10 UTC 2011 x86_64 GNU/Linux java version "1.6.0_22" Java(TM) SE Runtime Environment (build 1.6.0_22-b04) Java HotSpot(TM) 64-Bit Server VM (build 17.1-b03, mixed mode) The map itself lies on a ramdisk of 1gb, we backup it every hour to a tar.bz2 directly of the ramdisk to a backup disk, the startup arguments are: java -Xms3072M -Xmx3072M \ -Dcom.sun.management.jmxremote \ -Dcom.sun.management.jmxremote.port=9004 \ -Dcom.sun.management.jmxremote.ssl=false \ -Djava.rmi.server.hostname=188.8.131.52 \ -jar craftbukkit-531.jar We also tried different startup arguments, removing -Xms, changing it to 512, or 128, only difference is how long it takes to crash. The next thing i'm going to try is pruning the map with pymclevel, we tried 500 blocks off the edge with no luck, i'm going to prune more and more until, hopefylly, the map works.