On Tue, Aug 06, 2013 at 08:56:00PM -0400, Steven Rostedt wrote: > On Tue, 2013-08-06 at 20:45 -0400, Steven Rostedt wrote: > > > [ 3.387362] short jumps: 106 > > [ 3.390277] long jumps: 330 > > > > Thus, approximately 25%. Not bad. > > Also, where these happen to be is probably even more important than how > many. If all the short jumps happen in slow paths, it's rather > pointless. But they seem to be in some rather hot paths. I had it print > out where it placed the short jumps too: > > The kmem_cache_* and the try_to_wake_up* are the hot paths that caught > my eye. > > But still, is this worth it? > Add short_counter,long_counter and before increment counter before each jump. That way we will know how many short/long jumps were taken. > -- Steve >
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