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  1. Minecraft: Java Edition
  2. MC-535

Random 1-2 sec Freezes SSP New World in 1.4.2

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    • Icon: Bug Bug
    • Resolution: Invalid
    • None
    • Minecraft 1.4.2
    • None
    • Linux Fedora 17 x64 - Oracle Java (JRE) 1.7.0_u9-b05
    • Unconfirmed
    • Survival

      random 1-2sec freezes, in new world (1.4.2) "single player mode", no mods.
      On freeze: java occupie 100% CPU usage at all 8 Logical cores.

      following message in console:
      "WARNING: Can't keep up! Did the system time change, or is the server overloaded?"

      Seems related to un-allocating of memory.(According to F3 Debug information), (might be an issue with GC?)

      UPDATE:
      Configured java arguments manually so that "-Xmx4096M -Xms4096M", problem still persist, so it's not related to java memory allocation changes.

      Also tried with OpenJRE 1.7, with no change.

      No related messages in syslog.

      appending bug description:
      if it freezes while "Minecraft Music" is playing; when freeze ends the music does not continue to play.

      UPDATE 2:

      Ok, so it may be a memory leak, chunk unloading or something wrong with garbage collecting,

      Before freeze, memory usage builds up from around ~400MB to >1050-1500MB of total the total 3500ish MB, then it freezes for 1-2 secounds and jumps down to ~400MB.

        1. debuginfo.txt
          17 kB
          John-Erik Haugen

            Unassigned Unassigned
            johneh87 John-Erik Haugen
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              Created:
              Updated:
              Resolved: