MC-20765Extremely high CPU consumption by Minecraft 1.6.1
Once server is started, it starts to consume a lot of CPU, slowing down entire system to crawl - and that's with 0 players connected.
It is possible to connect to server, but game is nearly unplayable due to lag.
Update: CPU usage drops after setting server difficulty to peaceful, so most likely the problem is related to hostile mobs (zombies again?).
Environment
Headless Ubuntu server
$ uname -a
Linux VindicarServer 3.2.0-48-generic #74-Ubuntu SMP Thu Jun 6 19:43:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
With Sun JRE installed
$ java -version
java version "1.7.0_25"
Java(TM) SE Runtime Environment (build 1.7.0_25-b15)
Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)
Hardware:
4x Intel(R) Atom(TM) CPU D525 @ 1.80GHz
4GB RAM
Command line:
java -Xmx1024M -Xms1024M -jar minecraft-server.jar nogui
Linked Issues
Created Issue:
Extremely high CPU consumption by Minecraft 1.6.1
Once server is started, it starts to consume a lot of CPU, slowing down entire system to crawl - and that's with 0 players connected.
It is possible to conenct to server, but game is nearly unplayable due to lag.
Environment
Headless Ubuntu server
$ uname -a
Linux VindicarServer 3.2.0-48-generic #74-Ubuntu SMP Thu Jun 6 19:43:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
With Sun JRE installed
$ java -version
java version "1.7.0_25"
Java(TM) SE Runtime Environment (build 1.7.0_25-b15)
Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)Hardware:
4x Intel(R) Atom(TM) CPU D525 @ 1.80GHz
4GB RAMCommand line:
java -Xmx1024M -Xms1024M -jar minecraft-server.jar nogui
Once server is started, it starts to consume a lot of CPU, slowing down entire system to crawl - and that's with 0 players connected.
It is possible to con
enct to server, but game is nearly unplayable due to lag.Once server is started, it starts to consume a lot of CPU, slowing down entire system to crawl - and that's with 0 players connected.
It is possible to connect to server, but game is nearly unplayable due to lag.
Once server is started, it starts to consume a lot of CPU, slowing down entire system to crawl - and that's with 0 players connected.
It is possible to connect to server, but game is nearly unplayable due to lag.
Update: CPU usage drops after setting server difficulty to peaceful, so most likely the problem is related to hostile mobs (zombies again?).
duplicates
From MC-20765:
Maybe this can help:
Something's taking too long! 'root.levels.paradise.tick.entities.regular.tick.ai.newAi.goalSelector.goalTick.pathfind' took aprox 261.523724 ms Something's taking too long! 'root.levels.paradise.tick.entities.regular.tick.ai.newAi.goalSelector.goalTick' took aprox 262.027559 ms Something's taking too long! 'root.levels.paradise.tick.entities.regular.tick.ai.newAi.goalSelector' took aprox 262.307236 ms Something's taking too long! 'root.levels.paradise.tick.entities.regular.tick.ai.newAi' took aprox 262.701753 ms Something's taking too long! 'root.levels.paradise.tick.entities.regular.tick.ai' took aprox 262.92655 ms Something's taking too long! 'root.levels.paradise.tick.entities.regular.tick' took aprox 263.271346 ms Something's taking too long! 'root.levels.paradise.tick.entities.regular' took aprox 467.872884 ms Something's taking too long! 'root.levels.paradise.tick.entities' took aprox 468.349919 ms Something's taking too long! 'root.levels.paradise.tick' took aprox 473.432748 ms Something's taking too long! 'root.levels.paradise' took aprox 473.944583 ms Something's taking too long! 'root.levels' took aprox 474.510017 ms Something's taking too long! 'root' took aprox 476.359478 ms
Only during nighttime.
Unable to reproduce.
Bug appears 10 times out of 10 for me.
Could you specify name&version of JRE package you use?
Maybe I'm using wrong JRE.
I've the same problem.
100% CPU usage only at night.
2013-07-02 17:38:06 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
2013-07-02 17:38:41 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
2013-07-02 17:38:45 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
2013-07-02 17:39:30 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
2013-07-02 17:39:34 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
2013-07-02 17:39:55 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
and so on...
Maybe this can help:
Something's taking too long! 'root.levels.paradise.tick.entities.regular.tick.ai.newAi.goalSelector.goalTick.pathfind' took aprox 261.523724 ms
Something's taking too long! 'root.levels.paradise.tick.entities.regular.tick.ai.newAi.goalSelector.goalTick' took aprox 262.027559 ms
Something's taking too long! 'root.levels.paradise.tick.entities.regular.tick.ai.newAi.goalSelector' took aprox 262.307236 ms
Something's taking too long! 'root.levels.paradise.tick.entities.regular.tick.ai.newAi' took aprox 262.701753 ms
Something's taking too long! 'root.levels.paradise.tick.entities.regular.tick.ai' took aprox 262.92655 ms
Something's taking too long! 'root.levels.paradise.tick.entities.regular.tick' took aprox 263.271346 ms
Something's taking too long! 'root.levels.paradise.tick.entities.regular' took aprox 467.872884 ms
Something's taking too long! 'root.levels.paradise.tick.entities' took aprox 468.349919 ms
Something's taking too long! 'root.levels.paradise.tick' took aprox 473.432748 ms
Something's taking too long! 'root.levels.paradise' took aprox 473.944583 ms
Something's taking too long! 'root.levels' took aprox 474.510017 ms
Something's taking too long! 'root' took aprox 476.359478 ms
Only during nighttime.
Duplicate of
MC-17630