Debug Mode - what to look for?

[RobParker]

We're still seeing a poor performance from XF and I was wondering if it was possible to use debug mode to see if any of the addons we use we're causing issues.

Could someone maybe explain some of the things returned via debug mode? For example, what's the "params" value? Some of the numbers returned there are very high.

 

[Jake Bunce]

You can enable debug mode by adding this line to your library/config.php file:

$config['debug'] = 1;

It will show load stats at the bottom of every forum page which is a good way to see if an addon is affecting load in any way. Simply compare the load numbers at the bottom of the page with and without an addon enabled.

 

[RobParker]

Sorry I wasn't clear. I have debug mode enabled but it's not clear what some of the output means, such as:

Params: 347, 347, 1333807787
Run Time: 0.000907

What's the params values there?

 

[RobParker]

Another example is

INSERT INTO xf_session_activity
	(user_id, unique_key, ip, controller_name, controller_action, view_state, params, view_date)
VALUES
	(?, ?, ?, ?, ?, ?, ?, ?)
ON DUPLICATE KEY UPDATE
	ip = VALUES(ip),
	controller_name = VALUES(controller_name),
	controller_action = VALUES(controller_action),
	view_state = VALUES(view_state),
	params = VALUES(params),
	view_date = VALUES(view_date)
Params: 347, 347, 1396923388, XenForo_ControllerPublic_Index, Index, valid, , 1336399898
Run Time: 0.000489

 

[Jeremy P]

They correspond to the values being inserted..

(user_id, unique_key, ip, controller_name, controller_action, view_state, params, view_date)
(347, 347, 1396923388, XenForo_ControllerPublic_Index, Index, valid, , 1336399898)

 

[RobParker]

Ah thanks. So a huge number isn't a problem.

 

[Shinjiru]

Hm, prepares the debug mode any problems? or can i enable it without worrying? thx

 

[RobParker]

It's probably wise to use a conditional so it only shows to admins and not everyone. There's an example in the RM of how to do that.

 

[Andrej]

Hm, prepares the debug mode any problems? or can i enable it without worrying? thx

Note that it is not advised to run a live site with debug mode enabled due to the increased resources utilised.