On Wed, 2007-05-23 at 10:40 -0400, Jason Baron wrote: > On Wed, 23 May 2007, Peter Zijlstra wrote: > > > Count lock contention events per lock class. Additionally track the first > > four > > callsites that resulted in the contention. > > > > I think that we need the total number of locking calls, not just the total > number of *contended* locking calls, in order to make the data > significant. Same for waittime. Yes, this pollutes the fastpath. In the > contention case, its one extra addition, and for the waittime, its a call > the sched_clock(). I don't think that's too much to pay for much more > meaningful data.
The holdtime statistics add these numbers. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
