On Fri, 2 Mar 2007, William Lee Irwin III wrote: > On Fri, Mar 02, 2007 at 02:22:56PM -0800, Andrew Morton wrote: > > Opterons seem to be particularly prone to lock starvation where a cacheline > > gets captured in a single package for ever. > > AIUI that phenomenon is universal to NUMA. Maybe it's time we > reexamined our locking algorithms in the light of fairness > considerations.
This is a phenomenon that is usually addressed at the cache logic level. Its a hardware maturation issue. A certain package should not be allowed to hold onto a cacheline forever and other packages must have a mininum time when they can operate on that cacheline. - 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/
