一般情况下可以关闭的服务：
chkconfig --level 2345 autofs off
chkconfig --level 2345 acpid off
#chkconfig --level 2345 sendmail off
chkconfig --level 2345 cups-config-daemon off
chkconfig --level 2345 cups off
chkconfig --level 2345 xfs off
chkconfig --level 2345 lm_sensors off
chkconfig gpm off
chkconfig openibd off
chkconfig iiim off
chkconfig pcmcia off
chkconfig cpuspeed off
chkconfig nfslock off
chkconfig ip6tables off
chkconfig rpcidmapd off
chkconfig apmd off
chkconfig arptables_jf off
chkconifg microcode_ctl off
chkconfig rpcgssd off
chkconfig NetworkManager off