cgroup设置导致系统cpu过高？怎么解？

[mopishv0]

之前希望用cgoup对hadoop进程的内存和使用那几块cpu进行限制
但是使用配置后
cpu load奇高 并且系统cpu占用都很高 正常进程几乎卡死
这是为什么呢？

mount {

        cpuset  = /cgroup/cpuset;

        cpu     = /cgroup/cpu;

        cpuacct = /cgroup/cpuacct;

        memory  = /cgroup/memory;

        devices = /cgroup/devices;

        freezer = /cgroup/freezer;

        net_cls = /cgroup/net_cls;

        blkio   = /cgroup/blkio;

}



group important {

    cpuset {

        cpuset.cpus = <%= cpus %>;

        cpuset.mems = <%= mems %>;

    } cpu {

        cpu.shares = 768;

    } memory {

        memory.limit_in_bytes = 3072M;

    }

}



group normal {

    cpuset {

        cpuset.cpus = <%= cpus %>;

        cpuset.mems = <%= mems %>;

    } cpu {

        cpu.shares = 512;

    } memory {

        memory.limit_in_bytes = 800M;

    }

}



group normal_1G {

    cpuset {

        cpuset.cpus = <%= cpus %>;

        cpuset.mems = <%= mems %>;

    } cpu {

        cpu.shares = 512;

    } memory {

        memory.limit_in_bytes = 1024M;

    }

}



group normal_2G {

    cpuset {

        cpuset.cpus = <%= cpus %>;

        cpuset.mems = <%= mems %>;

    } cpu {

        cpu.shares = 512;

    } memory {

        memory.limit_in_bytes = 2048M;

    }

}



group normal_3G {

    cpuset {

        cpuset.cpus = <%= cpus %>;

        cpuset.mems = <%= mems %>;

    } cpu {

        cpu.shares = 512;

    } memory {

        memory.limit_in_bytes = 3072M;

    }

}



group normal_4G {

    cpuset {

        cpuset.cpus = <%= cpus %>;

        cpuset.mems = <%= mems %>;

    } cpu {

        cpu.shares = 512;

    } memory {

        memory.limit_in_bytes = 4096M;

    }

}



group hadoop {

    cpuset {

        cpuset.cpus = <%= hadoop_service_cpus %>;

        cpuset.mems = <%= mems %>;

    }

}

                                       

以上是cgconfig的配置 <%= mems %>; <%= cpus %>; <%= hadoop_service_cpus %>;
会在puppet中被替换为具体指
求各位大大指教
很着急 可加分~谢谢

[mopishv1]

http://us.generation-nt.com/answer/cgroup-scheduling-adding-kthreadd-non-rt-cgroup-can-deadlock-kernel-help-201640552.html 应该和这个有关 如果不设置 rt_runtime 值为0 导致其中说明的内核死锁 另 没有回复收分