Posted Oct 30, 2010 3:50 UTC (Sat) by compudj (subscriber, #43335)
In reply to: Jump label by ptman
Parent article: Jump label
The overhead can be expected to be even lower than the static DTrace instrumentation, because jump labels, in combination with Tracepoints, branch over the whole stack setup and function call. DTrace only nops out the actual function call with a special linker phase, leaving in place the whole stack setup.