Shell脚步之监控iostat数据

最新推荐文章于 2024-08-01 19:38:22 发布

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最新推荐文章于 2024-08-01 19:38:22 发布

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CC 4.0 BY-SA版权

文章标签： shell awk

原文链接：http://www.cnblogs.com/landhu/p/5029811.html

本文介绍了一个用于美化iostat监控数据的Shell脚本。通过此脚本，可以将原始数据转换为更易读的格式，并添加时间戳以便于日志记录和问题定位。

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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\n", 
                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{

}