Low memory usage & low TPS

Discussion in 'Bukkit Help' started by Chunkr, Feb 1, 2013.

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    Hello, i'm currently hosting some minecraft servers for friends, but i'm currently having some problems with one server.
    I'm starting my server using
    java -jar -Xincgc -Xmx15G server.jar nogui
    The bukkit Version is
    This server is running CraftBukkit version git-Bukkit-1.4.7-R0.1-b2602jnks (MC: 1.4.7) (Implementing API version 1.4.7-R0.1)
    The following plugins are running on this server.
    AutoMessage, Modifyworld, PermissionsEx, AutoSaveWorld, DwDNPC, CoreProtect, Essentials, dynmap, ChatManager, EssentialsSpawn, Dynmap-Essentials
    But after quite some time, the following is happening.
    The TPS is getting lower and lower, and the server won't allocate more memory for Bukkit.
    Ive been trying to switch GC settings, and other stuff but no solution for my problems.
    Please not that i can't disable the Dynmap plugin, this is mandatory for the RPG.
    19:16:38 [INFO] Uptime: 2 hours 10 minutes 35 seconds
    19:16:38 [INFO] Current TPS = 16.017317
    19:16:38 [INFO] Maximum memory: 15,293 MB
    19:16:38 [INFO] Allocated memory: 1,282 MB
    19:16:38 [INFO] Free memory: 738 MB
    19:16:38 [INFO] World "world": 5,763 chunks, 2,816 entities
    19:16:38 [INFO] The End "world_the_end": 0 chunks, 0 entities
    The server is a 8Core XEON with 26GB's of ram.

    EDIT; Going to run Jstack to do some heapdumps, will post these when done.

    Cheers, Chunkr

    Ran JMX for some time here are some of the results.
    The Heap Size keeps increasing, even with 3/4 Players it won't go down.

    If someone could give me a push in the nice direction it would be awesome <3

    EDIT by Moderator: merged posts, please use the edit button instead of double posting.
    Last edited by a moderator: May 31, 2016
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    It's a dedicated box, and you are running nothing but this one MC server on it? If so, that's really odd. And it's at your place, not a hosting location?

    And you don't strike me as someone running outdated Java versions or anything. Are you using any fancy parameters in your startup script?

    EDIT: Ignore last question, you have your startup right there in your post.
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    It's running on a Tier1 10Gbit Connection at OVH.

    And the Java we are using is
    java version "1.7.0"
    Java(TM) SE Runtime Environment (build 1.7.0-b147)
    Java HotSpot(TM) 64-Bit Server VM (build 21.0-b17, mixed mode)
    It's a bit strange, JMX / Jstack shows a increasing heap that will NEVER decrease which is strange
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