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  • 统计单日计算节点系统负荷、内存利用率和磁盘利用率 平均值和峰值

    平均值:

    cat 192.168.101.* | grep load | awk '{sum+=$4} END {print "average=", sum/NR}'

    cat 192.168.101.* | grep Memory | awk '{sum+=$3} END {print "average=", sum/NR}'

    cat 192.168.101.* | grep os-root | awk '{sum+=$5} END {print "average=", sum/NR}'

    峰值:

    方法一:

    cat 192.168.101.* | grep load | sort -k 4 -n | tail -n 1 | cut -d " " -f 4

    cat 192.168.101.* | grep Memory | sort -k 3 -n | tail -n 1 | cut -d " " -f 2 | cut -d : -f 2

    cat 192.168.101.* | grep os-root | sort -k 5 -n | tail -n 1 | cut -d " " -f 12

    标橙色cut命令和文本格式还有些理不清

    方法二:

    cat 192.168.101.* | grep load | awk 'BEGIN {max = 0} {if ($4-max>0) max=$4 fi} END {print "max=", max}'

    cat 192.168.101.* | grep Memory | awk 'BEGIN {max = 0} {if ($3-max>0) max=$3 fi} END {print "max=", max}'

    cat 192.168.101.* | grep os-root | awk 'BEGIN {max = 0} {if ($5-max>0) max=$5 fi} END {print "max=", max}'

    方法三:有误 

    cat 192.168.101.* | grep load | awk 'BEGIN {max = 0} {if ($4>max) max=$4 fi} END {print "max=", max}'

    cat 192.168.101.* | grep Memory | awk 'BEGIN {max = 0} {if ($3>max) max=$3 fi} END {print "max=", max}'

    cat 192.168.101.* | grep os-root | awk 'BEGIN {max = 0} {if ($5>max) max=$5 fi} END {print "max=", max}'

    标橙色一条有错误,如下:

    [root@XXXX]# cat 192.168.101.* | grep load
    system load average: 0.73
    system load average: 1.32
    system load average: 0.59
    system load average: 1.55
    system load average: 1.92
    system load average: 1.28
    system load average: 1.00
    system load average: 0.29
    system load average: 2.42
    system load average: 1.14
    system load average: 0.45
    system load average: 0.10
    system load average: 2.01
    system load average: 1.40
    system load average: 1.21
    system load average: 0.82
    system load average: 14.61
    system load average: 3.40
    system load average: 0.17
    system load average: 2.39
    system load average: 0.16
    system load average: 3.25
    system load average: 1.15
    system load average: 0.26
    system load average: 0.17

    [root@XXXX]# cat 192.168.101.* | grep load | awk 'BEGIN {max = 0} {if ($4>max) max=$4 fi} END {print "max=", max}'

    max= 3.40

    结果竟然是3.40而不是14.61

    这是因为数值的比较不是按照数值大小,而是按照字母的ASCII进行排序。

    因而,改为方法一sort,加-n

    或改为方法二,做差同0比较

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  • 原文地址:https://www.cnblogs.com/cmss/p/5422304.html
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