java consuming lot of cpu with lots of futex calls

[Steffen Winther]

Hi

Trying to make a test lab workable with cassandra 1.2.15 nodes
on Centos 6.6 kernel 2.6.32-504.8.1.el6.x86_64
on top of KVM nodes.

But I finding java perf very poor, seems JVM is doing a lot
of futext sys calls which times out, thus 
spinning a lot of cpu cycles.

Tried with both Oracle java 1.7.76 and 1.8.0_05-b13

Wondering if others might known a work around/fix.

TIA