Manual:$wgDebugTimestamps

Debug: $wgDebugTimestamps
Prefix debug messages with relative timestamp.
Introduced in version:1.16.0 (r61582)
Removed in version:1.35.0 (Gerrit change 574448; git #f081a71f)
Allowed values:(boolean)
Default value:false

Details

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Prefix debug messages with relative timestamp. Very-poor man's profiler.