Manual:mctest.php

MediaWiki file: mctest.php
Location:	maintenance/
Source code:	master • 1.42.3 • 1.41.4 • 1.39.10
Classes:	McTest

Details

mctest.php is a MediaWiki maintenance script that makes several 'set', 'incr', 'get' requests on every memcached server and shows a report.

Options/Arguments

Option	Description	Required	Default value
--i	Number of iterations	Optional	100
--cache	Use servers from this $wgObjectCaches store	Optional
--driver	Either "php" or "pecl"	Optional	php
--server[:port]	Memcached server to test, with optional port	Optional

Usage

php maintenance/mctest.php [ --i| --cache| --driver| --server[:port] ]

Basic test

Terminal

$ php maintenance/mctest.php

Warming up connections to cache servers...done
Single and batched operation profiling/test results:
127.0.0.1:11211
 add: 100/100 8ms   set: 100/100 7ms   incr: 100/100 9ms   get: 100/100 (7ms)   delete: 100/100 (1ms)
 setMulti (IB): ✓ 2ms   getMulti (IB): 100/100 0ms   changeTTLMulti (IB): ✓ 1ms   deleteMulti (IB): ✓ 1ms
 setMulti (DB): ✓ 2ms   getMulti (DB): 100/100 0ms   changeTTLMulti (DB): ✓ 1ms   deleteMulti (DB): ✓ 1ms

Test with custom iterations

Terminal

$ php maintenance/mctest.php --i 500

Warming up connections to cache servers...done
Single and batched operation profiling/test results:
127.0.0.1:11211
 add: 500/500 9ms   set: 500/500 7ms   incr: 500/500 7ms   get: 500/500 (9ms)   delete: 500/500 (7ms)
 setMulti (IB): ✓ 14ms   getMulti (IB): 500/500 3ms   changeTTLMulti (IB): ✓ 7ms   deleteMulti (IB): ✓ 7ms
 setMulti (DB): ✓ 13ms   getMulti (DB): 500/500 3ms   changeTTLMulti (DB): ✓ 7ms   deleteMulti (DB): ✓ 7ms

Test with custom server and port

Terminal

$ php maintenance/mctest.php "127.0.0.1:12345"

Warming up connections to cache servers...done
Single and batched operation profiling/test results:
127.0.0.1:12345
 add: 0/100 0ms   set: 0/100 0ms   incr: 100/100 0ms   get: 0/100 (0ms)   delete: 0/100 (0ms)
 setMulti (IB): ✗ 0ms   getMulti (IB): 0/100 0ms   changeTTLMulti (IB): ✗ 0ms   deleteMulti (IB): ✗ 0ms
 setMulti (DB): ✗ 0ms   getMulti (DB): 0/100 0ms   changeTTLMulti (DB): ✗ 0ms   deleteMulti (DB): ✗ 0ms

Common error

MediaWiki isn't configured for Memcached usage

This error occurs when your MediaWiki installation is not configured properly with memcached server.

MediaWiki isn't configured with a cache named '$cache'

This indicates that you have not configured the '$cache' properly in $wgObjectCaches. Check LocalSettings.php for configuration details.

See also

• Manual:Memcached
• Manual:Performance tuning
• Manual:findDeprecated.php