MySQL从5.1.4版开始带有一个压力测试工具mysqlslap ，通过模拟多个并发客户端访问mysql来执行测试，使用起来非常的简单。通过mysqlslap –help可以获得可用的选项，这里列一些主要的参数，更详细的说明参考官方手册 。
$mysqlslap -a --only-print
DROP SCHEMA IF EXISTS `mysqlslap`;
CREATE SCHEMA `mysqlslap`;
use mysqlslap;
CREATE TABLE `t1` (intcol1 INT(32) ,charcol1 VARCHAR(128));
INSERT INTO t1 VALUES (1804289383,'mxvtvmC9127qJNm06sGB8R92q2j7vTiiITRDGXM9ZLzkdekbWtmXKwZ2qG1llkRw5m9DHOFilEREk3q7oce8O3BEJC0woJsm6uzFAEynLH2xCsw1KQ1lT4zg9rdxBL');
...
SELECT intcol1,charcol1 FROM t1;
INSERT INTO t1 VALUES (364531492,'qMa5SuKo4M5OM7ldvisSc6WK9rsG9E8sSixocHdgfa5uiiNTGFxkDJ4EAwWC2e4NL1BpAgWiFRcp1zIH6F1BayPdmwphatwnmzdwgzWnQ6SRxmcvtd6JRYwEKdvuWr');
DROP SCHEMA IF EXISTS `mysqlslap`;
可以看到最后由删除一开始创建的schema的动作，整个测试完成后不会在数据库中留下痕迹。假如我们执行一次测试，分别50和100个并发，执行1000次总查询，那么：
$mysqlslap -a --concurrency=50,100 --number-of-queries 1000 --debug-info
Benchmark
Average number of seconds to run all queries: 0.375 seconds
Minimum number of seconds to run all queries: 0.375 seconds
Maximum number of seconds to run all queries: 0.375 seconds
Number of clients running queries: 50
Average number of queries per client: 20
Benchmark
Average number of seconds to run all queries: 0.453 seconds
Minimum number of seconds to run all queries: 0.453 seconds
Maximum number of seconds to run all queries: 0.453 seconds
Number of clients running queries: 100
Average number of queries per client: 10
User time 0.29, System time 0.11
Maximum resident set size 0, Integral resident set size 0
Non-physical pagefaults 4032, Physical pagefaults 0, Swaps 0
Blocks in 0 out 0, Messages in 0 out 0, Signals 0
Voluntary context switches 7319, Involuntary context switches 681
上结果可以看出，50和100个并发分别得到一次测试结果(Benchmark)，并发数越多，执行完所有查询的时间越长。为了准确起见，可以多迭代测试几次:
$ mysqlslap -a --concurrency=50,100 --number-of-queries 1000 --iterations=5 --debug-info
Benchmark
Average number of seconds to run all queries: 0.380 seconds
Minimum number of seconds to run all queries: 0.377 seconds
Maximum number of seconds to run all queries: 0.385 seconds
Number of clients running queries: 50
Average number of queries per client: 20
Benchmark
Average number of seconds to run all queries: 0.447 seconds
Minimum number of seconds to run all queries: 0.444 seconds
Maximum number of seconds to run all queries: 0.451 seconds
Number of clients running queries: 100
Average number of queries per client: 10
User time 1.44, System time 0.67
Maximum resident set size 0, Integral resident set size 0
Non-physical pagefaults 17922, Physical pagefaults 0, Swaps 0
Blocks in 0 out 0, Messages in 0 out 0, Signals 0
Voluntary context switches 36796, Involuntary context switches 4093
测试同时不同的存储引擎的性能进行对比：
$ mysqlslap -a --concurrency=50,100 --number-of-queries 1000 --iterations=5 --engine=myisam,innodbmysqlslap -a --concurrency=50,100 --number-of-queries 1000 --iterations=5 --engine=myisam,innodb --debug-info
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.200 seconds
Minimum number of seconds to run all queries: 0.188 seconds
Maximum number of seconds to run all queries: 0.210 seconds
Number of clients running queries: 50
Average number of queries per client: 20
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.238 seconds
Minimum number of seconds to run all queries: 0.228 seconds
Maximum number of seconds to run all queries: 0.251 seconds
Number of clients running queries: 100
Average number of queries per client: 10
Benchmark
Running for engine innodb
Average number of seconds to run all queries: 0.375 seconds
Minimum number of seconds to run all queries: 0.370 seconds
Maximum number of seconds to run all queries: 0.379 seconds
Number of clients running queries: 50
Average number of queries per client: 20
Benchmark
Running for engine innodb
Average number of seconds to run all queries: 0.443 seconds
Minimum number of seconds to run all queries: 0.440 seconds
Maximum number of seconds to run all queries: 0.447 seconds
Number of clients running queries: 100
Average number of queries per client: 10
User time 2.83, System time 1.66
Maximum resident set size 0, Integral resident set size 0
Non-physical pagefaults 34692, Physical pagefaults 0, Swaps 0
Blocks in 0 out 0, Messages in 0 out 0, Signals 0
Voluntary context switches 87306, Involuntary context switches 10326
–auto-generate-sql, -a测试的过程需要生成测试表，插入测试数据，这个mysqlslap可以自动生成，默认生成一个mysqlslap的schema，如果已经存在则先删除，这里要注意了，不要用–create-schema指定已经存在的库，否则后果可能很严重。可以用–only-print来打印实际的测试过程：
自动生成测试表和数据
–auto-generate-sql-load-type=type
测试语句的类型。取值包括：read，key，write，update和mixed(默认)。
–number-char-cols=N, -x N
自动生成的测试表中包含多少个字符类型的列，默认1
–number-int-cols=N, -y N
自动生成的测试表中包含多少个数字类型的列，默认1
–number-of-queries=N
总的测试查询次数
–query=name,-q
使用自定义脚本执行测试，例如可以调用自定义的一个存储过程或者sql语句来执行测试。
–create-schema
测试的schema，MySQL中schema也就是database
–commint=N
多少条DML后提交一次
–compress, -C
如果服务器和客户端支持都压缩，则压缩信息传递
–concurrency=N, -c N
并发量，也就是模拟多少个客户端同时执行select。可指定多个值，以逗号或者–delimiter参数指定的值做为分隔符
–engine=engine_name, -e engine_name
创建测试表所使用的存储引擎，可指定多个
–iterations=N, -i N
测试执行的迭代次数
–detach=N
执行N条语句后断开重连
–debug-info, -T
打印内存和CPU的信息
–only-print
只打印测试语句而不实际执行
$mysqlslap -a --only-print
DROP SCHEMA IF EXISTS `mysqlslap`;
CREATE SCHEMA `mysqlslap`;
use mysqlslap;
CREATE TABLE `t1` (intcol1 INT(32) ,charcol1 VARCHAR(128));
INSERT INTO t1 VALUES (1804289383,'mxvtvmC9127qJNm06sGB8R92q2j7vTiiITRDGXM9ZLzkdekbWtmXKwZ2qG1llkRw5m9DHOFilEREk3q7oce8O3BEJC0woJsm6uzFAEynLH2xCsw1KQ1lT4zg9rdxBL');
...
SELECT intcol1,charcol1 FROM t1;
INSERT INTO t1 VALUES (364531492,'qMa5SuKo4M5OM7ldvisSc6WK9rsG9E8sSixocHdgfa5uiiNTGFxkDJ4EAwWC2e4NL1BpAgWiFRcp1zIH6F1BayPdmwphatwnmzdwgzWnQ6SRxmcvtd6JRYwEKdvuWr');
DROP SCHEMA IF EXISTS `mysqlslap`;
可以看到最后由删除一开始创建的schema的动作，整个测试完成后不会在数据库中留下痕迹。假如我们执行一次测试，分别50和100个并发，执行1000次总查询，那么：
$mysqlslap -a --concurrency=50,100 --number-of-queries 1000 --debug-info
Benchmark
Average number of seconds to run all queries: 0.375 seconds
Minimum number of seconds to run all queries: 0.375 seconds
Maximum number of seconds to run all queries: 0.375 seconds
Number of clients running queries: 50
Average number of queries per client: 20
Benchmark
Average number of seconds to run all queries: 0.453 seconds
Minimum number of seconds to run all queries: 0.453 seconds
Maximum number of seconds to run all queries: 0.453 seconds
Number of clients running queries: 100
Average number of queries per client: 10
User time 0.29, System time 0.11
Maximum resident set size 0, Integral resident set size 0
Non-physical pagefaults 4032, Physical pagefaults 0, Swaps 0
Blocks in 0 out 0, Messages in 0 out 0, Signals 0
Voluntary context switches 7319, Involuntary context switches 681
上结果可以看出，50和100个并发分别得到一次测试结果(Benchmark)，并发数越多，执行完所有查询的时间越长。为了准确起见，可以多迭代测试几次:
$ mysqlslap -a --concurrency=50,100 --number-of-queries 1000 --iterations=5 --debug-info
Benchmark
Average number of seconds to run all queries: 0.380 seconds
Minimum number of seconds to run all queries: 0.377 seconds
Maximum number of seconds to run all queries: 0.385 seconds
Number of clients running queries: 50
Average number of queries per client: 20
Benchmark
Average number of seconds to run all queries: 0.447 seconds
Minimum number of seconds to run all queries: 0.444 seconds
Maximum number of seconds to run all queries: 0.451 seconds
Number of clients running queries: 100
Average number of queries per client: 10
User time 1.44, System time 0.67
Maximum resident set size 0, Integral resident set size 0
Non-physical pagefaults 17922, Physical pagefaults 0, Swaps 0
Blocks in 0 out 0, Messages in 0 out 0, Signals 0
Voluntary context switches 36796, Involuntary context switches 4093
测试同时不同的存储引擎的性能进行对比：
$ mysqlslap -a --concurrency=50,100 --number-of-queries 1000 --iterations=5 --engine=myisam,innodbmysqlslap -a --concurrency=50,100 --number-of-queries 1000 --iterations=5 --engine=myisam,innodb --debug-info
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.200 seconds
Minimum number of seconds to run all queries: 0.188 seconds
Maximum number of seconds to run all queries: 0.210 seconds
Number of clients running queries: 50
Average number of queries per client: 20
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.238 seconds
Minimum number of seconds to run all queries: 0.228 seconds
Maximum number of seconds to run all queries: 0.251 seconds
Number of clients running queries: 100
Average number of queries per client: 10
Benchmark
Running for engine innodb
Average number of seconds to run all queries: 0.375 seconds
Minimum number of seconds to run all queries: 0.370 seconds
Maximum number of seconds to run all queries: 0.379 seconds
Number of clients running queries: 50
Average number of queries per client: 20
Benchmark
Running for engine innodb
Average number of seconds to run all queries: 0.443 seconds
Minimum number of seconds to run all queries: 0.440 seconds
Maximum number of seconds to run all queries: 0.447 seconds
Number of clients running queries: 100
Average number of queries per client: 10
User time 2.83, System time 1.66
Maximum resident set size 0, Integral resident set size 0
Non-physical pagefaults 34692, Physical pagefaults 0, Swaps 0
Blocks in 0 out 0, Messages in 0 out 0, Signals 0
Voluntary context switches 87306, Involuntary context switches 10326
0
–defaults-file，配置文件存放位置
–concurrency，并发数
–engines，引擎
–iterations，迭代的实验次数
–socket，socket文件位置
自动测试：
–auto-generate-sql，自动产生测试SQL
–auto-generate-sql-load-type，测试SQL的类型。类型有mixed，update，write，key，read。
–number-of-queries，执行的SQL总数量
–number-int-cols，表内int列的数量
–number-char-cols，表内char列的数量
例如：
shell>mysqlslap –defaults-file=/u01/mysql1/mysql/my.cnf –concurrency=50,100 –iterations=1 –number-int-cols=4 –auto-generate-sql –auto-generate-sql-load-type=write –engine=myisam –number-of-queries=200 -S/tmp/mysql1.sock
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.016 seconds
Minimum number of seconds to run all queries: 0.016 seconds
Maximum number of seconds to run all queries: 0.016 seconds
Number of clients running queries: 50
Average number of queries per client: 4
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.265 seconds
Minimum number of seconds to run all queries: 0.265 seconds
Maximum number of seconds to run all queries: 0.265 seconds
Number of clients running queries: 100
Average number of queries per client: 2
指定数据库的测试：
–create-schema，指定数据库名称
–query，指定SQL语句，可以定位到某个包含SQL的文件
例如：
shell>mysqlslap –defaults-file=/u01/mysql1/mysql/my.cnf –concurrency=25,50 –iterations=1 –create-schema=test –query=/u01/test.sql -S/tmp/mysql1.sock
Benchmark
Average number of seconds to run all queries: 0.018 seconds
Minimum number of seconds to run all queries: 0.018 seconds
Maximum number of seconds to run all queries: 0.018 seconds
Number of clients running queries: 25
Average number of queries per client: 1
Benchmark
Average number of seconds to run all queries: 0.011 seconds
Minimum number of seconds to run all queries: 0.011 seconds
Maximum number of seconds to run all queries: 0.011 seconds
Number of clients running queries: 50
Average number of queries per client: 1
–concurrency，并发数
–engines，引擎
–iterations，迭代的实验次数
–socket，socket文件位置
自动测试：
–auto-generate-sql，自动产生测试SQL
–auto-generate-sql-load-type，测试SQL的类型。类型有mixed，update，write，key，read。
–number-of-queries，执行的SQL总数量
–number-int-cols，表内int列的数量
–number-char-cols，表内char列的数量
例如：
shell>mysqlslap –defaults-file=/u01/mysql1/mysql/my.cnf –concurrency=50,100 –iterations=1 –number-int-cols=4 –auto-generate-sql –auto-generate-sql-load-type=write –engine=myisam –number-of-queries=200 -S/tmp/mysql1.sock
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.016 seconds
Minimum number of seconds to run all queries: 0.016 seconds
Maximum number of seconds to run all queries: 0.016 seconds
Number of clients running queries: 50
Average number of queries per client: 4
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.265 seconds
Minimum number of seconds to run all queries: 0.265 seconds
Maximum number of seconds to run all queries: 0.265 seconds
Number of clients running queries: 100
Average number of queries per client: 2
指定数据库的测试：
–create-schema，指定数据库名称
–query，指定SQL语句，可以定位到某个包含SQL的文件
例如：
shell>mysqlslap –defaults-file=/u01/mysql1/mysql/my.cnf –concurrency=25,50 –iterations=1 –create-schema=test –query=/u01/test.sql -S/tmp/mysql1.sock
Benchmark
Average number of seconds to run all queries: 0.018 seconds
Minimum number of seconds to run all queries: 0.018 seconds
Maximum number of seconds to run all queries: 0.018 seconds
Number of clients running queries: 25
Average number of queries per client: 1
Benchmark
Average number of seconds to run all queries: 0.011 seconds
Minimum number of seconds to run all queries: 0.011 seconds
Maximum number of seconds to run all queries: 0.011 seconds
Number of clients running queries: 50
Average number of queries per client: 1
0
mysqlslap是官方提供的压力测试工具之一，官方介绍如下：
mysqlslap is a diagnostic program designed to emulate client load for a MySQL server and to report
the timing of each stage. It works as if multiple clients are accessing the server. mysqlslap is
available as of MySQL 5.1.4.
下面介绍一些常见参数：
--auto-generate-sql-write-number
每个线程中产生多少个insert
--auto-generate-sql-guid-primary
自动产生guid格式的主键
--number-of-queries=50000
每个连接客户端总共发起的查询次数
--concurrency=10,50,100
并发连接线程数，分别是10、50、100个并发
-i, --iterations
重复执行测试的次数
--number-char-cols=10
创建测试表的 char 型字段数量
--number-int-cols=10
创建测试表的 int 型字段数量
下面是一个完整的例子：
mysqlslap -hlocalhost -uroot --engine=innodb --auto-generate-sql-write-number=100000 \
--auto-generate-sql-guid-primary --concurrency=10,50,100 --number-of-queries=500000 \
--iterations=2 --number-char-cols=10 --number-int-cols=10 --auto-generate-sql \
--create-schema=sbtest --auto-generate-sql-load-type=mixed
mysqlslap is a diagnostic program designed to emulate client load for a MySQL server and to report
the timing of each stage. It works as if multiple clients are accessing the server. mysqlslap is
available as of MySQL 5.1.4.
下面介绍一些常见参数：
--auto-generate-sql-write-number
每个线程中产生多少个insert
--auto-generate-sql-guid-primary
自动产生guid格式的主键
--number-of-queries=50000
每个连接客户端总共发起的查询次数
--concurrency=10,50,100
并发连接线程数，分别是10、50、100个并发
-i, --iterations
重复执行测试的次数
--number-char-cols=10
创建测试表的 char 型字段数量
--number-int-cols=10
创建测试表的 int 型字段数量
下面是一个完整的例子：
mysqlslap -hlocalhost -uroot --engine=innodb --auto-generate-sql-write-number=100000 \
--auto-generate-sql-guid-primary --concurrency=10,50,100 --number-of-queries=500000 \
--iterations=2 --number-char-cols=10 --number-int-cols=10 --auto-generate-sql \
--create-schema=sbtest --auto-generate-sql-load-type=mixed
0
MySQL5.1地的确提供了好多有力的工具来帮助我们DBA进行数据库管理。
现在看一下这个压力测试工具mysqlslap
关于他的选项手册上以及--help介绍的很详细。
我解释一下一些常用的选项。
--concurrency 并发量，也就是模拟多少个客户端同时执行select。可指定多个值，以逗号或者–delimiter参数指定的值做为分隔符。
--engines 代表要测试的引擎，可以有多个，用分隔符隔开。
--iterations 代表要运行这些测试多少次。
--auto-generate-sql 代表用系统自己生成的SQL脚本来测试。
--auto-generate-sql-load-type 代表要测试的是读还是写还是两者混合的（read,write,update,mixed(默认)）
--number-of-queries 代表总共要运行多少次查询。每个客户运行的查询数量可以用查询总数/并发数来计算。比如倒数第二个结果2=200/100。
--debug-info 代表要输出一些调试相关信息。
--number-int-cols 自动生成的测试表中包含多少个数字类型的列，默认1。
--number-char-cols 自动生成的测试表中包含多少个字符类型的列，默认1。
--create-schema 测试的schema，MySQL中schema也就是database。
--query 使用自定义脚本执行测试，例如可以调用自定义的一个存储过程或者sql语句来执行测试。
--only-print 如果只想打印看看SQL语句是什么，可以用这个选项。
–commint=N 多少条DML后提交一次。
–compress, -C 如果服务器和客户端支持都压缩，则压缩信息传递。
–detach=N 执行N条语句后断开重连。
现在来看一些我测试的例子。
1、用自带的SQL脚本来测试。
MySQL版本为5.1.23
[root@localhost ~]# mysqlslap --defaults-file=/usr/local/mysql-maria/my.cnf --concurrency=50,100,200 --iterations=1 --number-int-cols=4 --number-char-cols=35 --auto-generate-sql --auto-generate-sql-add-autoincrement --auto-generate-sql-load-type=mixed --engine=myisam,innodb --number-of-queries=200 --debug-info -uroot -p1 -S/tmp/mysql_3310.sock
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.063 seconds
Minimum number of seconds to run all queries: 0.063 seconds
Maximum number of seconds to run all queries: 0.063 second
Number of clients running queries: 50
Average number of queries per client: 4
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.070 seconds
Minimum number of seconds to run all queries: 0.070 seconds
Maximum number of seconds to run all queries: 0.070 seconds
Number of clients running queries: 100
Average number of queries per client: 2
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.092 seconds
Minimum number of seconds to run all queries: 0.092 seconds
Maximum number of seconds to run all queries: 0.092 seconds
Number of clients running queries: 200
Average number of queries per client:
Benchmark
Running for engine innodb
Average number of seconds to run all queries: 0.115 seconds
Minimum number of seconds to run all queries: 0.115 seconds
Maximum number of seconds to run all queries: 0.115 seconds
Number of clients running queries: 50
Average number of queries per client: 4
Benchmark
Running for engine innodb
Average number of seconds to run all queries: 0.134 seconds
Minimum number of seconds to run all queries: 0.134 seconds
Maximum number of seconds to run all queries: 0.134 seconds
Number of clients running queries: 100
Average number of queries per client: 2
Benchmark
Running for engine innodb
Average number of seconds to run all queries: 0.192 seconds
Minimum number of seconds to run all queries: 0.192 seconds
Maximum number of seconds to run all queries: 0.192 seconds
Number of clients running queries: 200
Average number of queries per client: 1
User time 0.06, System time 0.15
Maximum resident set size 0, Integral resident set size 0
Non-physical pagefaults 5803, Physical pagefaults 0, Swaps 0
Blocks in 0 out 0, Messages in 0 out 0, Signals 0
Voluntary context switches 8173, Involuntary context switches 528
我来解释一下结果的含义。
拿每个引擎最后一个Benchmark示例。
对于INNODB引擎，200个客户端同时运行这些SQL语句平均要花0.192秒。相应的MYISAM为0.092秒。
2、用我们自己定义的SQL 脚本来测试。
这些数据在另外一个MySQL实例上。版本为5.0.45
先看一下这两个表的相关数据。
1）、总记录数。
mysql> select table_rows as rows from information_schema.tables where table_schema='t_girl' and table_name='article';
+--------+
| rows |
+--------+
| 296693 |
+--------+
1 row in set (0.01 sec)
mysql> select table_rows as rows from information_schema.tables where table_schema='t_girl' and table_name='category';
+------+
| rows |
+------+
| 113 |
+------+
1 row in set (0.00 sec)
2）、总列数。
mysql> select count(*) as column_total from information_schema.columns where table_schema = 't_girl' and table_name = 'article';
+--------------+
| column_total |
+--------------+
| 32 |
+--------------+
1 row in set (0.01 sec)
mysql> select count(*) as column_total from information_schema.columns where table_schema = 't_girl' and table_name = 'category';
+--------------+
| column_total |
+--------------+
| 9 |
+--------------+
1 row in set (0.01 sec)
3）、调用的存储过程
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
)
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）、我们用mysqlslap来测试
以下得这个例子代表用mysqlslap来测试并发数为25,50,100的调用存储过程，并且总共调用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
平均每个并发运行200个查询用了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 结果
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 (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.aid from article as a inner join (select cid from |
|3203 | root | % | t_girl | Query | 0| NULL | deallocate prepares1 |
|3221 | root | % | t_girl | Query | 0| NULL | select a.* from article as a inner join (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.aid from article as a inner join (select cid from |
+------+------+--------------------+--------------------+---------+-------+--------------------+------------------------------------------------------------------------------------------------------+
rows in set (0.00 sec)
上面的测试语句其实也可以这样写
[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
小总结一下。
mysqlslap对于模拟多个用户同时对MySQL发起“进攻”提供了方便。同时详细的提供了“高负荷攻击MySQL”的详细数据报告。
而且如果你想对于多个引擎的性能。这个工具再好不过了。
现在看一下这个压力测试工具mysqlslap
关于他的选项手册上以及--help介绍的很详细。
我解释一下一些常用的选项。
--concurrency 并发量，也就是模拟多少个客户端同时执行select。可指定多个值，以逗号或者–delimiter参数指定的值做为分隔符。
--engines 代表要测试的引擎，可以有多个，用分隔符隔开。
--iterations 代表要运行这些测试多少次。
--auto-generate-sql 代表用系统自己生成的SQL脚本来测试。
--auto-generate-sql-load-type 代表要测试的是读还是写还是两者混合的（read,write,update,mixed(默认)）
--number-of-queries 代表总共要运行多少次查询。每个客户运行的查询数量可以用查询总数/并发数来计算。比如倒数第二个结果2=200/100。
--debug-info 代表要输出一些调试相关信息。
--number-int-cols 自动生成的测试表中包含多少个数字类型的列，默认1。
--number-char-cols 自动生成的测试表中包含多少个字符类型的列，默认1。
--create-schema 测试的schema，MySQL中schema也就是database。
--query 使用自定义脚本执行测试，例如可以调用自定义的一个存储过程或者sql语句来执行测试。
--only-print 如果只想打印看看SQL语句是什么，可以用这个选项。
–commint=N 多少条DML后提交一次。
–compress, -C 如果服务器和客户端支持都压缩，则压缩信息传递。
–detach=N 执行N条语句后断开重连。
现在来看一些我测试的例子。
1、用自带的SQL脚本来测试。
MySQL版本为5.1.23
[root@localhost ~]# mysqlslap --defaults-file=/usr/local/mysql-maria/my.cnf --concurrency=50,100,200 --iterations=1 --number-int-cols=4 --number-char-cols=35 --auto-generate-sql --auto-generate-sql-add-autoincrement --auto-generate-sql-load-type=mixed --engine=myisam,innodb --number-of-queries=200 --debug-info -uroot -p1 -S/tmp/mysql_3310.sock
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.063 seconds
Minimum number of seconds to run all queries: 0.063 seconds
Maximum number of seconds to run all queries: 0.063 second
Number of clients running queries: 50
Average number of queries per client: 4
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.070 seconds
Minimum number of seconds to run all queries: 0.070 seconds
Maximum number of seconds to run all queries: 0.070 seconds
Number of clients running queries: 100
Average number of queries per client: 2
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.092 seconds
Minimum number of seconds to run all queries: 0.092 seconds
Maximum number of seconds to run all queries: 0.092 seconds
Number of clients running queries: 200
Average number of queries per client:
Benchmark
Running for engine innodb
Average number of seconds to run all queries: 0.115 seconds
Minimum number of seconds to run all queries: 0.115 seconds
Maximum number of seconds to run all queries: 0.115 seconds
Number of clients running queries: 50
Average number of queries per client: 4
Benchmark
Running for engine innodb
Average number of seconds to run all queries: 0.134 seconds
Minimum number of seconds to run all queries: 0.134 seconds
Maximum number of seconds to run all queries: 0.134 seconds
Number of clients running queries: 100
Average number of queries per client: 2
Benchmark
Running for engine innodb
Average number of seconds to run all queries: 0.192 seconds
Minimum number of seconds to run all queries: 0.192 seconds
Maximum number of seconds to run all queries: 0.192 seconds
Number of clients running queries: 200
Average number of queries per client: 1
User time 0.06, System time 0.15
Maximum resident set size 0, Integral resident set size 0
Non-physical pagefaults 5803, Physical pagefaults 0, Swaps 0
Blocks in 0 out 0, Messages in 0 out 0, Signals 0
Voluntary context switches 8173, Involuntary context switches 528
我来解释一下结果的含义。
拿每个引擎最后一个Benchmark示例。
对于INNODB引擎，200个客户端同时运行这些SQL语句平均要花0.192秒。相应的MYISAM为0.092秒。
2、用我们自己定义的SQL 脚本来测试。
这些数据在另外一个MySQL实例上。版本为5.0.45
先看一下这两个表的相关数据。
1）、总记录数。
mysql> select table_rows as rows from information_schema.tables where table_schema='t_girl' and table_name='article';
+--------+
| rows |
+--------+
| 296693 |
+--------+
1 row in set (0.01 sec)
mysql> select table_rows as rows from information_schema.tables where table_schema='t_girl' and table_name='category';
+------+
| rows |
+------+
| 113 |
+------+
1 row in set (0.00 sec)
2）、总列数。
mysql> select count(*) as column_total from information_schema.columns where table_schema = 't_girl' and table_name = 'article';
+--------------+
| column_total |
+--------------+
| 32 |
+--------------+
1 row in set (0.01 sec)
mysql> select count(*) as column_total from information_schema.columns where table_schema = 't_girl' and table_name = 'category';
+--------------+
| column_total |
+--------------+
| 9 |
+--------------+
1 row in set (0.01 sec)
3）、调用的存储过程
DELIMITER $$
DROP PROCEDURE IF EXISTS `t_girl`.`sp_get_article`$$
CREATE DEFINER=`root`@`%` PROCEDURE `sp_get_article`(IN f_category_id int,
IN f_page_size int, IN f_page_no int
)
set @stmt = 'select a.* from article as a inner join ';
set @stmt = concat(@stmt,'(select a.aid from article as a ');
if f_category_id != 0 then
set @stmt = concat(@stmt,' inner join (select cid from category where cid = ',f_category_id,' or parent_id = ',f_category_id,') as b on a.category_id = b.cid');
end if;
if f_page_size >0 && f_page_no > 0 then
set @stmt = concat(@stmt,' limit ',(f_page_no-1)*f_page_size,',',f_page_size);
end if;
set @stmt = concat(@stmt,') as b on (a.aid = b.aid)');
prepare s1 from @stmt;
execute s1;
deallocate prepare s1;
set @stmt = NULL;
END$$
DELIMITER ;
4）、我们用mysqlslap来测试
以下得这个例子代表用mysqlslap来测试并发数为25,50,100的调用存储过程，并且总共调用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
平均每个并发运行200个查询用了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 结果
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 (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.aid from article as a inner join (select cid from |
|3203 | root | % | t_girl | Query | 0| NULL | deallocate prepares1 |
|3221 | root | % | t_girl | Query | 0| NULL | select a.* from article as a inner join (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.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 (selecta.aid from article as a inner join (select cid from |
+------+------+--------------------+--------------------+---------+-------+--------------------+------------------------------------------------------------------------------------------------------+
rows in set (0.00 sec)
上面的测试语句其实也可以这样写
[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
小总结一下。
mysqlslap对于模拟多个用户同时对MySQL发起“进攻”提供了方便。同时详细的提供了“高负荷攻击MySQL”的详细数据报告。
而且如果你想对于多个引擎的性能。这个工具再好不过了。
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