Manual:$wgUDPProfilerFormatString

Details
Format string for the UDP profiler.

The UDP profiler invokes sprintf with (profile id, count, cpu, cpu_sq, real, real_sq, entry name, memory) as arguments.

You can use sprintf's argument numbering/swapping capability to repeat, re-order or omit fields.

In MediaWiki 1.25 and later, set   instead.