/etc/cgconfig.conf
mount {
    cpu = /cgroups/cpu;
    cpuacct = /cgroups/cpuacct;
    memory = /cgroups/memory;
}


group java-i2p {
    perm {
        admin {
            uid = root;
        }
        task {
            uid = i2psvc;
        }
    }
    cpu {
        cpu.shares = 400;
    }
}

group java-hah {
    perm {
        admin {
            uid = root;
        }
        task {
            uid = hah;
        }
    }
    cpu {
        cpu.shares = 400;
    }
}

cat /etc/cgrules.conf
#<user>         <controllers>   <destination>
@i2psvc         cpu             java-i2p
hah             cpu             java-hah