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earlyoom 用于 CPU 使用率

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earlyoom 用于 CPU 使用率

我安装了一个名为的程序，earlyoom当我的 RAM 和交换空间几乎已满时，它会终止最耗费 RAM 的程序。但是，我发现我的笔记本电脑不断死机，因为所有四个虚拟核心（2 个核心具有超线程）的 CPU 使用率都达到 100%。当 CPU 达到 100% 时，是否有任何程序或脚本可以终止最耗费 CPU 的程序？

答案1

我发现这个似乎可以满足您的需求。我还没有测试过……您应该能够根据自己的目的进行调整。当然，不加区分地自动终止随机进程可能是不明智的。

#!/bin/bash

## Note: will kill the top-most process if the $CPU_LOAD is greater than the $CPU_THRESHOLD.
echo
echo checking for run-away process ...

CPU_LOAD=$(uptime | cut -d"," -f4 | cut -d":" -f2 | cut -d" " -f2 | sed -e "s/\.//g")
CPU_THRESHOLD=300
PROCESS=$(ps aux r)
TOPPROCESS=$(ps -eo pid -eo pcpu -eo command | sort -k 2 -r | grep -v PID | head -n 1)

if [ $CPU_LOAD -gt $CPU_THRESHOLD ] ; then
  # kill -9 $(ps -eo pid | sort -k 1 -r | grep -v PID | head -n 1) #original
  # kill -9 $(ps -eo pcpu | sort -k 1 -r | grep -v %CPU | head -n 1)
  kill -9 $TOPPROCESS
  echo system overloading!
  echo Top-most process killed $TOPPROCESS
  echo load average is at $CPU_LOAD
  echo 
  echo Active processes...
  ps aux r

  # send an email using mail
  SUBJECT="Runaway Process Report"
  # Email To ?
  EMAIL="[email protected]"
  # Email text/message
  EMAILMESSAGE="/tmp/emailmessage.txt"
  echo "System overloading, possible runaway process."> $EMAILMESSAGE
  echo "Top-most process killed $TOPPROCESS" >>$EMAILMESSAGE
  echo "Load average was at $CPU_LOAD" >>$EMAILMESSAGE
  echo "Active processes..." >>$EMAILMESSAGE
  echo "$PROCESS" >>$EMAILMESSAGE
  mail -s "$SUBJECT" "$EMAIL" < $EMAILMESSAGE

else
 echo
 echo no run-aways. 
 echo load average is at $CPU_LOAD
 echo 
 echo Active processes...
 ps aux r
fi
exit 0

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