Support for Drupal 7 is ending on 5 January 2025—it’s time to migrate to Drupal 10! Learn about the many benefits of Drupal 10 and find migration tools in our resource center.
Adds to HTTP headers of a response the performance data of the request not only
as the actual execution time in seconds (rtime), but also the utime and stime:
rtime represents the total duration of the response generation process.
utime represents the actual CPU time, exclusively spent on processing only
the PHP code of the current request, excluding other background processes.
stime represents the CPU time spent on kernel processes like disk read/writes
and other IO operations.