On Sat, 2015-07-11 at 16:36 -0400, Waiman Long wrote: > /* > + * Queued Spinlock Spin Thresholds > + * ------------------------------- > + * Because of the cacheline contention effect of the ticket spinlock, the > + * same spin threshold for queued spinlock will run a bit faster. So we set > + * a slight larger threshold for the queue head (1.25X) while the other queue > + * nodes will keep the same threshold.
How did you come to 1.25x? These sort of magic numbers scare me. -- 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/
