接上篇：mysql使用mysql-udf-http效率测试笔记 ，这次不使用rest架构，而是使用：libmemcached和memcached_functions_mysql

接上篇：mysql使用mysql-udf-http效率测试笔记 ，这次不使用rest架构，而是使用：libmemcached和memcached_functions_mysql，测试版本是：

libmemcached-0.34.tar.gz和memcached_functions_mysql-0.9.tar.gz，其它版本配对都有问题，我安装测试过有问题的版本有：

memcached_functions_mysql-1.1在：

libmemcached-0.49\libmemcached-0.48\libmemcached-0.47\libmemcached-0.30\libmemcached-0.43\\libmemcached-0.42\

下安装有错误

memcached_functions_mysql-0.10在：

libmemcached-0.42\下安装有错误

memcached_functions_mysql-0.8在：

libmemcached-0.49\libmemcached-0.48\libmemcached-0.47\libmemcached-0.44\libmemcached-0.43\

\libmemcached-0.42\下安装有错误

MySQL测试版本：5.1.55，操作系统Centos5.4 64bit，内存2G

安装libmemcached-0.34和memcached_functions_mysql-0.9，

[root@sunss24 libmemcached-0.34]#./configure \

--with-memcached=/home/memcache/bin/memcached

[root@sunss24 libmemcached-0. 34]# make

[root@sunss24 libmemcached-0. 34]# make install

再运行一下memstat，算成功了

[root@sunss24 ~]# ln -s /usr/local/lib/libmemcached.so.3 /usr/lib/

[root@sunss24 ~]# cd memcached_functions_mysql-0.9

[root@sunss24 memcached_functions_mysql-0.9]# ./configure \

--with-mysql=/usr/local/mysql/bin/mysql_config \

--libdir=/usr/local/mysql/lib/

[root@sunss memcached_functions_mysql-0.9]# make && make install

安装完成后将UDFs加载到MySQL中：

mysql> show variables like "%plugin%";

+---------------+-----------------------------------+

| Variable_name | Value |

+---------------+-----------------------------------+

| plugin_dir | /usr/local/mysql/lib/mysql/plugin |

+---------------+-----------------------------------+

1 row in set (0.00 sec)

[root@sunss ~]# find / -name "libmemcached_functions_mysql.so"

/usr/local/mysql/lib/libmemcached_functions_mysql.so

/root/memcached_functions_mysql-0.9/src/.libs/libmemcached_functions_mysql.so

You have new mail in /var/spool/mail/root

[root@sunss ~]# cp /usr/local/mysql/lib/libmemcached_functions_mysql.so /usr/local/mysql/lib/mysql/plugin/

[root@sunss ~]# cd memcached_functions_mysql-0.9/

[root@sunss ~]#cd sql/

mysql> source install_functions.sql;

查看各种版本：

mysql> select memc_udf_version();

+--------------------+

| memc_udf_version() |

+--------------------+

| 0.9 |

+--------------------+

1 row in set (0.00 sec)

mysql> select memc_libmemcached_version();

+-----------------------------+

| memc_libmemcached_version() |

+-----------------------------+

| 0.34 |

+-----------------------------+

1 row in set (0.00 sec)

mysql>

遇到问题：

No package 'libmemcached' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you

installed software in a non-standard prefix.

Alternatively, you may set the environment variables DEPS_CFLAGS

and DEPS_LIBS to avoid the need to call pkg-config.

See the pkg-config man page for more details.

解决办法：

[root@sunss24 memcached_functions_mysql-0.9]# whereis pkgconfig

[root@sunss24 memcached_functions_mysql-0.9]# export \

PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:/usr/lib/pkgconfig

导出所有memcache内容：

使用：memcached-hack.zip

效率测试：

插入：

include_once("gettime.php");

$btime = getmicrotime();

$i = 0;

$mem = new Memcache();

$mem->addServer('192.168.0.10', 11212);

$local_db = mysql_connect("192.168.0.208", "sunss", "123456");

if(!$local_db)

{

die('Could not connect: '.mysql_error());

}

$local_db_sel = mysql_select_db("test", $local_db);

mysql_query("set names utf8", $local_db);

while ( $i < 1000) {

$re_sql = "insert into urls (id,url) values ($i, 'www.gongchang.com')";

$res = mysql_query($re_sql, $local_db);

$i++;

}

mysql_close($local_db);

$etime = getmicrotime();

$runTime = round($etime - $btime, 4);

echo "runTime: ".$runTime."\r\n";

?>

1000条，插入时间：runTime: 1.4072

删除：

include_once("gettime.php");

$btime = getmicrotime();

$i = 0;

$mem = new Memcache();

$mem->addServer('192.168.0.10', 11212);

$local_db = mysql_connect("192.168.0.208", "sunss", "123456");

if(!$local_db)

{

die('Could not connect: '.mysql_error());

}

$local_db_sel = mysql_select_db("test", $local_db);

mysql_query("set names utf8", $local_db);

while ( $i < 1000) {

//$re_sql = "insert into urls (id,url) values ($i, 'www.gongchang.com')";

$re_sql = "delete from urls where id=".$i;

//echo "re_sql_1: ".$re_sql."\n";

$res = mysql_query($re_sql, $local_db);

$i++;

}

mysql_close($local_db);

$etime = getmicrotime();

$runTime = round($etime - $btime, 4);

echo "runTime: ".$runTime."\r\n";

?>

删除1000条，运行时间：runTime: 1.5534

更新未作

结论：每秒query大概650条记录，比上次的mysql-udf-http快多了

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