时间:2021-07-01 10:21:17 帮助过:8人阅读
代码如下:
# 还是交代一下环境吧
[root@beanvm ~]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 6.2 (Santiago)
[root@beanvm ~]# uname -a
Linux beanvm 2.6.32-220.el6.i686 #1 SMP Wed Nov 9 08:02:18 EST 2011 i686 i686 i386 GNU/Linux
# 下为报错
[mysql@beanvm ~]$ cd /usr/local/mysql/sql-bench/
[mysql@beanvm sql-bench]$ ./test-insert --server=mysql --user=root --password=mysql --log
Can't locate DBI.pm in @INC (@INC contains: /usr/local/lib/perl5 /usr/local/share/perl5 /usr/lib/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib/perl5 /usr/share/perl5 .) at ./test-insert line 33.
BEGIN failed--compilation aborted at ./test-insert line 33.
很显然这里缺少DBI组件,它是perl连接数据库的重要接口,先来检查一下这个包是否存在
代码如下:
[mysql@beanvm ]$ rpm -qa |grep perl-DB
可以直接用yum来安装,这里我用的安装包的形式,幸运的是,这些包在RHEL6的安装介质中都可以找到,只要安装下面两个包就可以了:
代码如下:
[root@beanvm Packages]# rpm -ivh perl-DBI-1.609-4.el6.i686.rpm
warning: perl-DBI-1.609-4.el6.i686.rpm: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY
Preparing... ########################################### [100%]
1:perl-DBI ########################################### [100%]
[root@beanvm Packages]# rpm -ivh perl-DBD-MySQL-4.013-3.el6.i686.rpm
warning: perl-DBD-MySQL-4.013-3.el6.i686.rpm: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY
error: Failed dependencies:
libmysqlclient.so.16 is needed by perl-DBD-MySQL-4.013-3.el6.i686
libmysqlclient.so.16(libmysqlclient_16) is needed by perl-DBD-MySQL-4.013-3.el6.i686
在安装perl-DBD-MySQL包时,我们发现提示缺失libmysqlclient.so.16文件,如果是经常安装MySQL的话,应该知道libmysqlclient.so是一个MySQL数据库中必备的库文件,会不会是没有链接到呢?
代码如下:
[root@beanvm ~]# ls -l /usr/lib/libmysqlclient.so.16*
[root@beanvm ~]# ls -l /usr/local/mysql/lib/
total 147260
-rw-r--r--. 1 mysql mysql 13322694 Feb 15 14:30 libmysqlclient.a
lrwxrwxrwx. 1 mysql mysql 16 Feb 15 14:39 libmysqlclient_r.a -> libmysqlclient.a
lrwxrwxrwx. 1 mysql mysql 17 Feb 15 14:39 libmysqlclient_r.so -> libmysqlclient.so
lrwxrwxrwx. 1 mysql mysql 20 Feb 15 14:39 libmysqlclient_r.so.18 -> libmysqlclient.so.18
lrwxrwxrwx. 1 mysql mysql 24 Feb 15 14:39 libmysqlclient_r.so.18.1.0 -> libmysqlclient.so.18.1.0
lrwxrwxrwx. 1 mysql mysql 20 Feb 15 14:39 libmysqlclient.so -> libmysqlclient.so.18
lrwxrwxrwx. 1 mysql mysql 24 Feb 15 14:39 libmysqlclient.so.18 -> libmysqlclient.so.18.1.0
-rwxr-xr-x. 1 mysql mysql 7654927 Feb 15 14:30 libmysqlclient.so.18.1.0
-rw-r--r--. 1 mysql mysql 129797464 Feb 15 14:38 libmysqld.a
-rw-r--r--. 1 mysql mysql 10166 Feb 15 14:29 libmysqlservices.a
drwxr-xr-x. 3 mysql mysql 4096 Feb 15 14:39 plugin
从上面的结果可以得知,已经存在libmysqlclient.so.18文件了,但是版本不符,因此还是需要这个libmysqlclient.so.16文件,那么从哪里可以找到呢?最简便的方法就是安装MySQL RPM安装套件中的MySQL-shared-compat包:(我的MySQL是编译安装的,但是在同版本的RPM套件中MySQL-shared-compat-5.6.16-1.el6.i686.rpm包却提供了必要的libmysqlclient.so.16文件,就这点来说编译部署还是没有RPM安装来的全面)
代码如下:
# 我的MySQL版本:5.6.16
[root@beanvm ~]# rpm -ivh MySQL-shared-compat-5.6.16-1.el6.i686.rpm
Preparing... ########################################### [100%]
1:MySQL-shared-compat ########################################### [100%]
再次安装perl-DBD-MySQL-4.013-3.el6.i686.rpm就可以了
代码如下:
[root@beanvm Packages]# rpm -ivh perl-DBD-MySQL-4.013-3.el6.i686.rpm
warning: perl-DBD-MySQL-4.013-3.el6.i686.rpm: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY
Preparing... ########################################### [100%]
1:perl-DBD-MySQL ########################################### [100%]
综上所述,安装DBI建议顺序安装三个包:
代码如下:
# DBI安装包:
perl-DBI-1.609-4.el6.i686.rpm
# 必备的库文件包,注意版本,这里主要提供的是libmysqlclient.so.16
MySQL-shared-compat-5.6.16-1.el6.i686.rpm
# DBD组件
perl-DBD-MySQL-4.013-3.el6.i686.rpm
成功后就可以使用Benchmark进行基准测试了,下面是测试插入性能的部分数据:
代码如下:
[mysql@beanvm sql-bench]$ ./test-insert --server=mysql --user=root --password=mysql --log
Testing server 'MySQL 5.6.16' at 2014-02-15 16:36:17
Testing the speed of inserting data into 1 table and do some selects on it.
The tests are done with a table that has 100000 rows.
Generating random keys
Creating tables
Inserting 100000 rows in order
Inserting 100000 rows in reverse order
Inserting 100000 rows in random order
Time for insert (300000): 879 wallclock secs ( 3.51 usr 1.21 sys + 0.00 cusr 0.00 csys = 4.72 CPU)
Testing insert of duplicates
Time for insert_duplicates (100000): 18 wallclock secs ( 3.81 usr 1.41 sys + 0.00 cusr 0.00 csys = 5.22 CPU)
Test of prepared+execute/once prepared many execute selects
Time for prepared_select (100000): 31 wallclock secs (10.87 usr 1.81 sys + 0.00 cusr 0.00 csys = 12.68 CPU)
......
机器太差,数据请无视。。