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Memcache::getStats

(PECL memcache >= 0.2.0)

Memcache::getStatsПолучить статистику сервера

Описание

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

Memcache::getStats() возвращает ассоциативный массив, содержащий статистику сервера. Ключи массива соответствуют параметрам статистики, а значения - значениям параметров. Также вы можете использовать функцию memcache_get_stats().

Список параметров

type

Тип статистики для извлечения. Корректные значения: reset, malloc, maps, cachedump, slabs, items, sizes. В соответствии со спецификацией протокола memcached, эти дополнительные аргументы "могут быть изменены для удобства разработчиков memcache".

slabid

Используется совместно с type для указания из какого slab-файла делать выгрузку. Используется только в целях отладки. Команда cachedump пытается запустить сервер и должна использоваться только для отладки.

limit

Используется вместе с type для ограничения количества извлекаемых записей.

Возвращаемые значения

Возвращает ассоциативный массив, содержащий статистику сервера или false в случае возникновения ошибки.

Смотрите также

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User Contributed Notes 4 notes

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14
mikael at synd dot info
17 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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4
Amiangshu S. Bosu
14 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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0
niktriant89 at gmail dot com
3 months ago
Official up to date Memcached explanation of stats command output on the github page:

https://github.com/memcached/memcached/blob/master/doc/protocol.txt

Please check you current version
up
-1
Anonymous
17 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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