> *) compute the context-switch pair time average for the system. This is > your time threshold (CSt). This is not a uniform time. Consider the difference between context switch on the same hyperthread, context switch between cores on a die, context switch between sockets, context switch between distant numa nodes. You could have several orders of magnitude between all those. > > *) For each lock, maintain an average hold-time (AHt) statistic (I am > assuming this can be done cheaply...perhaps not). That would assume that the hold times are very uniform. But what happens when you e.g. have a workload where 50% of the lock aquisitions are short and 30% are long? I'm a little sceptical of such "too clever" algorithms. -Andi - 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
