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  • Shell脚步之监控iostat数据

    在性能测试中,进行iostat监控数据显示太不美观,看起来很痛苦,如下图

    为了显示美观,写个shell脚本进行改造,如下:

    #! /bin/bash
    
    
    interval=1
    if [ $# -gt 0 ]; then
      interval=$1
    fi
    
    
    
    while (true) do    iostat -k; sleep $interval; done | awk '
    
    BEGIN{
        data_flag = 0;
        
        sum_tps = 0;
        sum_read_kb_speed = 0;
        sum_write_kb_speed = 0;
        sum_read_kb = 0;
        sum_write_kb = 0;    
        
    }
    
    {    
        if ( $1 == "Device:")
        {
            data_flag = 1;
            #print "+ " $0
            
        }
        else if ( NF == 0 )
        {
            if (data_flag == 1)
            {
                printf("%s tps %6.2f kB_read/s %10.2f kB_write/s %10.2f kB_read %14d kB_write %14d
    ", 
                    strftime("%D %H:%M:%S"),
                    sum_tps,
                    sum_read_kb_speed,
                    sum_write_kb_speed,
                    sum_read_kb,
                    sum_write_kb);
        
                data_flag = 0;
        
                sum_tps = 0;
                sum_read_kb_speed = 0;
                sum_write_kb_speed = 0;
                sum_read_kb = 0;
                sum_write_kb = 0;
                
                #print "- " $0
            }
            else
            {
                #print "= " $0
            }
            #data_flag=0;
        }
        else
        {
            if (data_flag == 1)
            {
                #print "1 " $0;
                
                tps = $2;
                read_kb_speed = $3;
                write_kb_speed = $4;
                read_kb = $5;
                write_kb = $6;
                
                sum_tps += tps;
                sum_read_kb_speed += read_kb_speed;
                sum_write_kb_speed += write_kb_speed;
                sum_read_kb += read_kb;
                sum_write_kb += write_kb;
                
                
            }
            else
            {
                #print "0 " $0;
            }
        }    
    }
    
    END{
    
    }
    
        

    运行后效果如下:

    是不是显示好多了。且有时间显示,这样定入log后定位问题方便很多

    iostat参考见:http://www.ha97.com/4546.html

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  • 原文地址:https://www.cnblogs.com/landhu/p/5029811.html
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