3）、調(diào)用的存儲(chǔ)過程
DELIMITER $$
DROP PROCEDURE IF EXISTS `t_girl`.`sp_get_article`$$
CREATE DEFINER=`root`@`% PROCEDURE `sp_get_article`(IN f_category_id int，
IN f_page_size int， IN f_page_no int
)
BEGIN
set @stmt = 'select a.* from article as a inner join ';
set @stmt = concat(@stmt，'(select a.aid from article as a ');
if f_category_id != 0 then
set @stmt = concat(@stmt，' inner join (select cid from category where cid = '，f_category_id，' or parent_id = '，f_category_id，') as b on a.category_id = b.cid');
end if;
if f_page_size >0 && f_page_no > 0 then
set @stmt = concat(@stmt，' limit '，(f_page_no-1)*f_page_size，'，'，f_page_size);
end if;
set @stmt = concat(@stmt，') as b on (a.aid = b.aid)');
prepare s1 from @stmt;
execute s1;
deallocate prepare s1;
set @stmt = NULL;
END$$
DELIMITER ;
4）、我們用mysqlslap來測(cè)試
以下得這個(gè)例子代表用mysqlslap來測(cè)試并發(fā)數(shù)為25，50，100的調(diào)用存儲(chǔ)過程，并且總共調(diào)用5000次。
[root@localhost ~]# mysqlslap --defaults-file=/usr/local/mysql-maria/my.cnf --concurrency=25，50，100 --iterations=1 --query='call t_girl.sp_get_article(2，10，1);' --number-of-queries=5000 --debug-info -uroot -p -S/tmp/mysql50.sock
Enter password:
Benchmark
Average number of seconds to run all queries: 3.507 seconds
Minimum number of seconds to run all queries: 3.507 seconds
Maximum number of seconds to run all queries: 3.507 seconds
Number of clients running queries: 25
Average number of queries per client: 200
平均每個(gè)并發(fā)運(yùn)行200個(gè)查詢用了3.507秒。
Benchmark
Average number of seconds to run all queries: 3.742 seconds
Minimum number of seconds to run all queries: 3.742 seconds
Maximum number of seconds to run all queries: 3.742 seconds
Number of clients running queries: 50
Average number of queries per client: 100
Benchmark
Average number of seconds to run all queries: 3.697 seconds
Minimum number of seconds to run all queries: 3.697 seconds
Maximum number of seconds to run all queries: 3.697 seconds
Number of clients running queries: 100
Average number of queries per client: 50
User time 0.87， System time 0.33
Maximum resident set size 0， Integral resident set size 0
Non-physical pagefaults 1877， Physical pagefaults 0， Swaps 0
Blocks in 0 out 0， Messages in 0 out 0， Signals 0
Voluntary context switches 27218， Involuntary context switches 3100
看一下SHOW PROCESSLIST 結(jié)果
mysql> show processlist;
+------+------+--------------------+--------------------+---------+-------+--------------------+------------------------------------------------------------------------------------------------------+
| Id | User | Host | db | Command | Time | State | Info |
+------+------+--------------------+--------------------+---------+-------+--------------------+------------------------------------------------------------------------------------------------------+
…………
| 3177 | root | % | t_girl | Query | 0 | NULL | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3178 | root | % | t_girl | Query | 0 | NULL | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3179 | root | % | t_girl | Query | 0 | NULL | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3181 | root | % | t_girl | Query | 0 | NULL | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3180 | root | % | t_girl | Query | 0 | NULL | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3182 | root | % | t_girl | Query | 0 | NULL | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3183 | root | % | t_girl | Query | 0 | NULL | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3187 | root | % | t_girl | Query | 0 | removing tmp table | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3186 | root | % | t_girl | Query | 0 | NULL | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3194 | root | % | t_girl | Query | 0 | NULL | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3203 | root | % | t_girl | Query | 0 | NULL | deallocate prepare s1 |
…………
| 3221 | root | % | t_girl | Query | 0 | NULL | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3222 | root | % | t_girl | Query | 0 | NULL | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3223 | root | % | t_girl | Query | 0 | NULL | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3224 | root | % | t_girl | Query | 0 | removing tmp table | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3225 | root | % | t_girl | Query | 0 | NULL | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
| 3226 | root | % | t_girl | Query | 0 | NULL | select a.* from article as a inner join (select a.aid from article as a inner join (select cid from |
+------+------+--------------------+--------------------+---------+-------+--------------------+------------------------------------------------------------------------------------------------------+
55 rows in set (0.00 sec)
上面的測(cè)試語句其實(shí)也可以這樣寫
[root@localhost ~]# mysqlslap --defaults-file=/usr/local/mysql-maria/my.cnf --concurrency=25，50，100 --iterations=1 --create-schema='t_girl' --query='call sp_get_article(2，10，1);' --number-of-queries=5000 --debug-info -uroot -p -S/tmp/mysql50.sock
小總結(jié)一下。mysqlslap對(duì)于模擬多個(gè)用戶同時(shí)對(duì)MySQL發(fā)起“進(jìn)攻”提供了方便。同時(shí)詳細(xì)的提供了“高負(fù)荷攻擊MySQL”的詳細(xì)數(shù)據(jù)報(bào)告。而且如果你想對(duì)于多個(gè)引擎的性能。這個(gè)工具再好不過了。
