On Tue, Aug 09, 2011 at 08:47:26PM +0200, Peter Zijlstra wrote: > On Tue, 2011-08-09 at 11:31 -0700, Fernando Lopez-Lezcano wrote: > > Hmmm, what are reasonable values for CONFIG_RCU_BOOST_PRIO and > > CONFIG_RCU_BOOST_DELAY? (or at least what are you using?). > > I'm using the defaults, since I haven't actually got a workload besides > compiling kernels ;-) > > Changing these values is very much workload dependent, the PRIO should > be high enough not to cause memory starvation, but low enough not to > disrupt anything important, and thus completely dependent on you > favourite RT workload. > > The same goes for the DELAY, too long and you run out of memory, too > short and you get more overhead, depends on your workload, your machine > memory size etc.. > > Paul should of course be put on trial for giving us these knobs, but > seeing where they come from I totally understand they exist ;-) You mean my experience at the tail end of 3.0 -wasn't- being put on trial? ;-) Thanx, Paul -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
