On Tue, May 12, 2015 at 7:04 PM, Vladimir Davydov <vdavydov@xxxxxxxxxxxxx> wrote: > Hi, > > This patch set introduces a new user API for tracking user memory pages > that have not been used for a given period of time. The purpose of this > is to provide the userspace with the means of tracking a workload's > working set, i.e. the set of pages that are actively used by the > workload. Knowing the working set size can be useful for partitioning > the system more efficiently, e.g. by tuning memory cgroup limits > appropriately, or for job placement within a compute cluster. > > ---- USE CASES ---- > > The unified cgroup hierarchy has memory.low and memory.high knobs, which > are defined as the low and high boundaries for the workload working set > size. However, the working set size of a workload may be unknown or > change in time. With this patch set, one can periodically estimate the > amount of memory unused by each cgroup and tune their memory.low and > memory.high parameters accordingly, therefore optimizing the overall > memory utilization. > Hi Vladimir, Thanks for the patches, I was able test how the series is helpful to determine docker container workingset / idlemem with these patches. (tested on ppc64le after porting to a distro kernel). -- 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>