Hi, > >> I'm now writing remove-lock-page-cgroup patches. it works well. > >> please wait for a while... > > > > I'm looking forward to those patches. > > > > By the way, I'm glad if memory-cgroup has a feature which can make a > > page_cgroup move between cgroups with small overhead. It makes > > bio-cgroup improve the accuracy of tracking down pages. > > Page movement can be a very expensive operation and is proportional to the size > of the control group. I think movement should be an optional feature, if we ever > add it. Yes, we should avoid moving pages as far as it is balanced fairly well between groups. But I want to move pages between bio-cgoups in case it started charging quite a few I/O requests to a wrong bio-cgroup. I think it will be okay if pages moves between bio-cgroups, but they don't need to move between memory cgroups. I know the latter is really heavy and the effect seems to be so limited. Thanks, Hirokazu Takahashi. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
