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Bug
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Resolution: Cannot Reproduce
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Minecraft 14w29b, Minecraft 14w30c
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None
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Windows 7 Ultimate 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.140303-2144)
CPU: Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz (4 CPUs), ~3.3GHz
Memory: 8192MB RAM
Video: NVIDIA GeForce GTX 465, Driver Version: 9.18.13.3788
Java Version: 7 Update 60 (build 1.7.0_60-b19)
JVM Arguments: -Xms2G -Xmx4G -XX:ParallelGCThreads=4 -XX:+UseG1GC -XX:MaxGCPauseMillis=500
Graphics Fancy, Render Distance 10 chunks, Smooth Lighting Maximum, Max Framrate 100 fps, 3d Anaglyph Off, View Bobing On, GUI Scale Auto, Advanced OpenGL Off, Brightness Moody, Clouds On, Particles All, Fullscreen Off, Use VSync Off, Mipmap Levels 4, Alternate Blocks On, Use VBOs OnWindows 7 Ultimate 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.140303-2144) CPU: Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz (4 CPUs), ~3.3GHz Memory: 8192MB RAM Video: NVIDIA GeForce GTX 465, Driver Version: 9.18.13.3788 Java Version: 7 Update 60 (build 1.7.0_60-b19) JVM Arguments: -Xms2G -Xmx4G -XX:ParallelGCThreads=4 -XX:+UseG1GC -XX:MaxGCPauseMillis=500 Graphics Fancy, Render Distance 10 chunks, Smooth Lighting Maximum, Max Framrate 100 fps, 3d Anaglyph Off, View Bobing On, GUI Scale Auto, Advanced OpenGL Off, Brightness Moody, Clouds On, Particles All, Fullscreen Off, Use VSync Off, Mipmap Levels 4, Alternate Blocks On, Use VBOs On
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Unconfirmed
After several hours the game becomes less responsive(player movement gets choppy) and uses more memory. FPS seems unaffected and cpu usage never exceeds 35%. As I catch up on the changes in minecraft over the last few years I'm often running tests on mechanics in the background while sleeping or afk. In 1.7.9 and 1.7.10 and even 14w28b this never caused me issue. Even though I've allowed for up to 4gb of memory to be allocated the previous versions never exceeded 2gb allocated. In 14w29b, however, I have noticed that the overall memory usage will have doubled to tap at the 4gb consistently in about 8 hours time. Even if nothing of consequence is occurring in the world(which was last nights test). This may also be related to the visits from Herobrine(which causes an immediate jump in memory usage). However I'm leaning more towards memory leak. Oh, and this is in single player.
Update: the following Java 8 Arguments fixed this for me,
-Xmx1G -Xmn128M -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:-UseAdaptiveSizePolicy
