probe::ioscheduler.elv_next_request(3stap) centos man page | unix.com

PROBE::IOSCHEDULER(3stap)				  IO Scheduler and block IO Taps				 PROBE::IOSCHEDULER(3stap)

NAME
       probe::ioscheduler.elv_next_request - Fires when a request is retrieved from the request queue

SYNOPSIS
       ioscheduler.elv_next_request

VALUES
       name
	   Name of the probe point

       elevator_name
	   The type of I/O elevator currently enabled

SystemTap Tapset Reference					     June 2014						 PROBE::IOSCHEDULER(3stap)