Memcache::getStats

(PECL memcache >= 0.2.0)

Memcache::getStats — 获取服务器统计信息

说明

Memcache::getStats(string $type = ?, int $slabid = ?, int $limit = 100): array

Memcache::getStats()返回一个关联数据的服务器统计信息。数组key是统计信息名，值就是统计信息的值。同样你可以使用函数memcache_get_stats()。

参数

type: 期望抓取的统计信息类型，可以使用的值有{reset, malloc, maps, cachedump, slabs, items, sizes}。通过memcached协议指定这些附加参数是为了方便memcache开发者(检查其中的变动)。
slabid: 用于与参数type联合从指定slab分块拷贝数据，cachedump命令会完全占用服务器通常用于比较严格的调试。
limit: 用于和参数type联合来设置cachedump时从服务端获取的实体条数。

返回值

返回关联数组表示的服务器统计信息或者在失败时返回 false

参见

Memcache::getVersion() - 返回服务器版本信息
Memcache::getExtendedStats() - 缓存服务器池中所有服务器统计信息

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User Contributed Notes 3 notes

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mikael at synd dot info ¶

15 years ago


pid                        Process id of this server process

uptime                    Number of seconds this server has been running

time                    Current UNIX time according to the server

version                    Version string of this server

rusage_user                Accumulated user time for this process

rusage_system            Accumulated system time for this process

curr_items                Current number of items stored by the server

total_items                Total number of items stored by this server ever since it started

bytes                    Current number of bytes used by this server to store items

curr_connections        Number of open connections

total_connections        Total number of connections opened since the server started running

connection_structures    Number of connection structures allocated by the server

cmd_get                    Cumulative number of retrieval requests

cmd_set                    Cumulative number of storage requests

get_hits                Number of keys that have been requested and found present

get_misses                Number of items that have been requested and not found

bytes_read                Total number of bytes read by this server from network

bytes_written            Total number of bytes sent by this server to network

limit_maxbytes            Number of bytes this server is allowed to use for storage.

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Amiangshu S. Bosu ¶

13 years ago


Here is a memcache stats analyzer method that can be used to print memcache stats in a nice informative tabular format.


<?php


function printDetails($status){


echo "<table border='1'>";


        echo "<tr><td>Memcache Server version:</td><td> ".$status ["version"]."</td></tr>";

        echo "<tr><td>Process id of this server process </td><td>".$status ["pid"]."</td></tr>";

        echo "<tr><td>Number of seconds this server has been running </td><td>".$status ["uptime"]."</td></tr>";

        echo "<tr><td>Accumulated user time for this process </td><td>".$status ["rusage_user"]." seconds</td></tr>";

        echo "<tr><td>Accumulated system time for this process </td><td>".$status ["rusage_system"]." seconds</td></tr>";

        echo "<tr><td>Total number of items stored by this server ever since it started </td><td>".$status ["total_items"]."</td></tr>";

        echo "<tr><td>Number of open connections </td><td>".$status ["curr_connections"]."</td></tr>";

        echo "<tr><td>Total number of connections opened since the server started running </td><td>".$status ["total_connections"]."</td></tr>";

        echo "<tr><td>Number of connection structures allocated by the server </td><td>".$status ["connection_structures"]."</td></tr>";

        echo "<tr><td>Cumulative number of retrieval requests </td><td>".$status ["cmd_get"]."</td></tr>";

        echo "<tr><td> Cumulative number of storage requests </td><td>".$status ["cmd_set"]."</td></tr>";


        $percCacheHit=((real)$status ["get_hits"]/ (real)$status ["cmd_get"] *100);

        $percCacheHit=round($percCacheHit,3);

        $percCacheMiss=100-$percCacheHit;


        echo "<tr><td>Number of keys that have been requested and found present </td><td>".$status ["get_hits"]." ($percCacheHit%)</td></tr>";

        echo "<tr><td>Number of items that have been requested and not found </td><td>".$status ["get_misses"]."($percCacheMiss%)</td></tr>";


        $MBRead= (real)$status["bytes_read"]/(1024*1024);


        echo "<tr><td>Total number of bytes read by this server from network </td><td>".$MBRead." Mega Bytes</td></tr>";

        $MBWrite=(real) $status["bytes_written"]/(1024*1024) ;

        echo "<tr><td>Total number of bytes sent by this server to network </td><td>".$MBWrite." Mega Bytes</td></tr>";

        $MBSize=(real) $status["limit_maxbytes"]/(1024*1024) ;

        echo "<tr><td>Number of bytes this server is allowed to use for storage.</td><td>".$MBSize." Mega Bytes</td></tr>";

        echo "<tr><td>Number of valid items removed from cache to free memory for new items.</td><td>".$status ["evictions"]."</td></tr>";


echo "</table>";


    }


?>



Sample usage:

<?php


  $memcache_obj = new Memcache;

  $memcache_obj->addServer('memcache_host', 11211);

   printDetails($memcache_obj->getStats());

?>

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Anonymous ¶

15 years ago


The stats output from this function and what is output from the getExtendedStats() are identical except that getExtendedStats() provides information for all servers used.

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官方地址：https://www.php.net/manual/en/memcache.getstats.php

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Memcache::getStats

说明

参数

返回值

参见

User Contributed Notes 3 notes