On Fri, Jul 12, 2013 at 12:14:08PM +0200, Peter Zijlstra wrote: > On Thu, Jul 11, 2013 at 03:09:14PM +0100, Mel Gorman wrote: > > That might be necessary when the machine is overloaded. As a > > starting point the following should retry the migrate a number of times > > until success. The retry is checked on every fault but should not fire > > more than once every 100ms. > > Yeah, something like that might work. But getting a working imbalance bound is > important. The current very weak direct migration is the only thing that keeps > the system from massively skewing load.
I've corrected a flaw in that proposed patch, pulled in the check for dst load vs src load, and am adding another patch that will fallback to less preferred nodes if task_numa_find_cpu fails to find a suitable CPU. -- Mel Gorman SUSE Labs -- 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/
