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ps/top が大きく異なる CPU 使用値をレポートします

Solution Verified - Updated -

Issue

  • "procps" rpm の "top" および "ps" コマンドが、大きく異なる CPU 使用値をレポートします。

    たとえば、以下のようになります。

    # rpm -q procps
procps-3.2.7-17.el5.x86_64

# top -b -n 1 | egrep 'PID|6088' ; ps -e -o psr,pcpu,pid,args | egrep 'CPU|6088'
PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                                                                                              
6088 admin       -11   0 80304  65m 1096 S 17.3  0.0 113:02.79 pidd                                                                                                                                                 

PSR %CPU   PID COMMAND
41  2.2  6088 ./pidd -c /usr/local/bin/pid.conf
13  0.0 18099 egrep CPU|6088

Environment

  • Red Hat Enterprise Linux
  • procps

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