On 01/16/2014 09:11 AM, Mel Gorman wrote: > This implies that it is possible to ahve a configuration with a big ratio > difference between Normal:Movable memory. In fact, one would expect that would be the norm. > In such configurations there > would be a risk that the system will reclaim heavily or go OOM because > the kernrel cannot allocate memory due to a relatively small Normal > zone. What protects against that? Is the user ever warned if the ratio > between Normal:Movable very high? The movable_node boot parameter still > turns the feature on and off, there appears to be no way of controlling > the ratio of memory other than booting with the minimum amount of memory > and manually hot-adding the sections to set the appropriate ratio. This is really the fundamental problem with this particular approach to hotswap memory. -hpa -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>