一个简易的MySQL性能查询脚本

如下：

#!/bin/sh
mysqladmin -P3306 -uroot -p'password'  -r -i 1 ext |
awk -F"|" 
"BEGIN{ count=0; }"
'{ if($2 ~ /Variable_name/ && ((++count)%20 == 1)){
    print "----------|---------|--- MySQL Command Status --|----- Innodb row operation ----|-- Buffer Pool Read --";
    print "---Time---|---QPS---|select insert update delete|  read inserted updated deleted|   logical    physical";
}
else if ($2 ~ /Queries/){queries=$3;}
else if ($2 ~ /Com_select /){com_select=$3;}
else if ($2 ~ /Com_insert /){com_insert=$3;}
else if ($2 ~ /Com_update /){com_update=$3;}
else if ($2 ~ /Com_delete /){com_delete=$3;}
else if ($2 ~ /Innodb_rows_read/){innodb_rows_read=$3;}
else if ($2 ~ /Innodb_rows_deleted/){innodb_rows_deleted=$3;}
else if ($2 ~ /Innodb_rows_inserted/){innodb_rows_inserted=$3;}
else if ($2 ~ /Innodb_rows_updated/){innodb_rows_updated=$3;}
else if ($2 ~ /Innodb_buffer_pool_read_requests/){innodb_lor=$3;}
else if ($2 ~ /Innodb_buffer_pool_reads/){innodb_phr=$3;}
else if ($2 ~ /Uptime / && count >= 2){
  printf(" %s |%9d",strftime("%H:%M:%S"),queries);
  printf("|%6d %6d %6d %6d",com_select,com_insert,com_update,com_delete);
  printf("|%6d %8d %7d %7d",innodb_rows_read,innodb_rows_inserted,innodb_rows_updated,innodb_rows_deleted);
  printf("|%10d %11d
",innodb_lor,innodb_phr);
}}'

输出如下：

这个脚本主要利用了mysqladmin提供的功能

-r, --relative      Show difference between current and previous values when
                      used with -i. Currently only works with extended-status.
extended-status       Gives an extended status message from the server

ext是extended-status的缩写~