Hi Srinivas, It looks like your email did not get delivered to the mailing lists (and the people in the CC list) properly. So quoting your entire mail as-it-is here. And thanks a lot for taking a look at this patchset! Regards, Srivatsa S. Bhat On 11/09/2012 10:18 PM, SrinivasPandruvada wrote: > I did like this implementation and think it is valuable. > I am experimenting with one of our HW. This type of partition does help in > saving power. We believe we can save up-to 1W power per DIM with the help > of some HW/BIOS changes. We are only talking about content preserving memory, > so we don't have to be 100% correct. > In my experiments, I tried two methods: > - Similar to approach suggested by Mel Gorman. I have a special sticky > migrate type like CMA. > - Buddy buckets: Buddies are organized into memory region aware buckets. > During allocation it prefers higher order buckets. I made sure that there is > no affect of my change if there are no power saving memory DIMs. The advantage > of this bucket is that I can keep the memory in close proximity for a related > task groups by direct hashing to a bucket. The free list if organized as two > dimensional array with bucket and migrate type for each order. > > In both methods, currently reclaim is targetted to be done by a sysfs interface > similar to memory compaction for a node allowing user space to initiate reclaim. > > Thanks, > Srinivas Pandruvada > Open Source Technology Center, > Intel Corp. > -- 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>