Monitoring iostat data using Shell

Monitoring iostat data using Shell
In performance testing, iostat monitoring data is too bad to display and looks very painful. For example, to display the appearance, write a shell script for transformation, as shown below:

#! /bin/bashinterval=1if [ $# -gt 0 ]; then  interval=$1fiwhile (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{}

 

The effect after running is as follows: is it better. There is time to display, so it is much easier to locate the problem after logging.