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random 100% CPU kernel when running java

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https://bbs.archlinux.org – Same issue here. I experience the same behaviour from kernel version 3.6.8 up to the current one : "3.6.11-1-ARCH #1 SMP PREEMPT Tue Dec 18 08:57:15 CET 2012 x86_64 GNU/Linux".I tried OpenJDK 1.7 and Oracle JDK with same results. Changing the JVM allocated memory helped a bit by reducing the blocked phase duration. BTW, on Fedora, some users experience the same issue : http://forums.fedoraforum.org/showthrea … 246&page=2 guy https://bbs.archlinux.org/profile.php?id=63210 2013-01-15T06:59:01Z (HowTos)