On Thu 07-06-12 18:19:07, Ron Chen wrote: [...] > However, not only us, but others have found that the memcg controller > does not cause sbrk(2) or mmap(2) to return error when the cgroup is > under high memory pressure. Yes, because memory controller tracks the allocated memory (with page granularity) rather than address space. So the memory is accounted when it is faulted in. > Further, when the amount of free memory is really low, the Linux > Kernel OOM killer picks something and kills it. Yes, this is the result of the design when the memory is tracked during page faults. > http://www.spinics.net/lists/cgroups/msg02622.html > > > We also would like to see if it is technically possible for the > Virtual Memory Manager to interact with the memory controller > properly and give us the semantics of setrlimit(2). What prevents you from using setrlimit from inside the group? -- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic -- 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>