mysql服务器负载太大,需要杀掉很多查询的进程
mysql> SELECT concat('KILL ',id,';') FROM information_schema.processlist WHERE user='root';
+------------------------+
| concat('KILL ',id,';')
+------------------------+
| KILL 3101;
| KILL 2946;
+------------------------+
2 rows IN SET (0.00 sec)
mysql> SELECT concat('KILL ',id,';') FROM information_schema.processlist WHERE user='root' INTO OUTFILE '/tmp/kill.txt';
Query OK, 2 rows affected (0.00 sec)
mysql> source /tmp/kill.txt;
Query OK, 0 rows affected (0.00 sec)