Troubleshooting oracle CRS start cssd fail with log show “unable to escalate to real time“

Oracle 11.2.0.4 RAC 安装完重启CRS启动失败,提示ocssd无法启动,ocssd日志中查看提示如下错误, 提示在提升CSSD进程为real time模式失败。
clssscSetPrivEnv: unable to set priority to 4
SLOS: cat=-2, opn=scls_set_priority_realtime, dep=1, loc=setsched
unable to escalate to real time

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