超简单舞蹈_超简单的qps统计方法

更新时间:2021-08-08    来源:mysql教程    手机版     字体:

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统计最近N秒内的QPS值(包括每秒select,insert等值)

mysql> select variable_name,sum(per_sec) as qps from (select straight_join   lower(gs0.variable_name) as variable_name,  (gs1.variable_value - gs0.variable_value)/5 as per_sec from (     select variable_name ,variable_value     from information_schema.global_status where variable_name in ("com_select","com_update","com_insert","com_replace","com_delete")     union all     select "",sleep(5) from dual   ) as gs0    join information_schema.global_status gs1 using (variable_name)) t  group by variable_name with rollup;

+---------------+---------+
| variable_name | qps     |
+---------------+---------+
| com_delete    |       0 |
| com_insert    |     2.2 |
| com_replace   |       0 |
| com_select    | 11524.8 |
| com_update    |       3 |
| NULL          |   11530 |
+---------------+---------+
6 rows in set (5.00 sec)


统计db启动以来的qps值,慢查询数量等信息

mysql> s
--------------
mysql  Ver 14.14 Distrib 5.5.35, for Linux (x86_64) using readline 5.1

Connection id:98313987
Current database:udb
Current user:ucloud@172.23.0.48
SSL:Not in use
Current pager:stdout
Using outfile:""
Using delimiter:;
Server version:5.5.35-log MySQL Community Server (GPL) by Remi
Protocol version:10
Connection:172.23.9.201 via TCP/IP
Server characterset:utf8
Db     characterset:utf8
Client characterset:utf8
Conn.  characterset:utf8
TCP port:3206
Uptime:274 days 1 hour 22 min 29 sec

Threads: 172  Questions: 7559640986  Slow queries: 150149138  Opens: 7799  Flush tables: 15  Open tables: 973  Queries per second avg: 319.261

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