Manual:profiling table

MediaWiki database layout

profiling table

The profiling table was used to store profiling -related data. This table doesn't exist unless created, e.g. by setting $wgProfiler['output'] = 'db' in your StartProfiler.php and running maintenance/update.php.

MediaWiki version:

≤ 1.34

The table has been removed in MediaWiki 1.35 gerrit:545308.

Fields

pf_count

Event count (an integer).

pf_time

Time sum (milliseconds).

pf_memory

Memory sum (KB).

pf_name

Method name (e.g. Title::getNamespace).

pf_server

Host (e.g. lucy-HP-Compaq-Elite-8300-SF).

Schema summary

MediaWiki versions:

1.13 – 1.34

DESCRIBE profiling;

+-----------+--------------+------+-----+---------+-------+
| Field     | Type         | Null | Key | Default | Extra |
+-----------+--------------+------+-----+---------+-------+
| pf_count  | int(11)      | NO   |     | 0       |       |
| pf_time   | float        | NO   |     | 0       |       |
| pf_memory | float        | NO   |     | 0       |       |
| pf_name   | varchar(255) | NO   | PRI |         |       |
| pf_server | varchar(30)  | NO   | PRI |         |       |
+-----------+--------------+------+-----+---------+-------+

MediaWiki versions:

1.7 – 1.12

DESCRIBE profiling;

+-----------+--------------+------+-----+---------+-------+
| Field     | Type         | Null | Key | Default | Extra |
+-----------+--------------+------+-----+---------+-------+
| pf_count  | int(11)      | NO   |     | 0       |       |
| pf_time   | float        | NO   |     | 0       |       |
| pf_name   | varchar(255) | NO   | PRI |         |       |
| pf_server | varchar(30)  | NO   | PRI |         |       |
+-----------+--------------+------+-----+---------+-------+

MediaWiki versions:

1.3 – 1.6

DESCRIBE profiling;

+----------+--------------+------+-----+---------+-------+
| Field    | Type         | Null | Key | Default | Extra |
+----------+--------------+------+-----+---------+-------+
| pf_count | int(11)      | NO   |     | 0       |       |
| pf_time  | float        | NO   |     | 0       |       |
| pf_name  | varchar(255) | NO   | PRI |         |       |
+----------+--------------+------+-----+---------+-------+

Indexes

MediaWiki versions:

1.7 – 1.34

SHOW INDEX IN profiling;

+-----------+------------+----------------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| Table     | Non_unique | Key_name       | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment |
+-----------+------------+----------------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| profiling |          0 | pf_name_server |            1 | pf_name     | NULL      |        NULL |     NULL | NULL   |      | HASH       |         |               |
| profiling |          0 | pf_name_server |            2 | pf_server   | NULL      |           0 |     NULL | NULL   |      | HASH       |         |               |
+-----------+------------+----------------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+

External link

https://phabricator.wikimedia.org/source/mediawiki/browse/master/maintenance/archives/patch-profiling.sql;2ed4b3245004cfa5de5e4b1ea3fcb9cab6c57c51