Hi, I had tried to perform the following test according to: http://lxr.free-electrons.com/source/Documentation/cgroups/memcg_test.txt#L2... mkdir /sys/fs/cgroup/memory/group1 echo $$ > /sys/fs/cgroup/memory/group1/cgroup.procs echo 40M > /sys/fs/cgroup/memory/group1/memory.limit_in_bytes Run a process which is a very short program, allocating 100MB: int main() { // Allocate 100 MB void *mem = malloc(1024*1024*100); if (mem) printf("malloc is ok\n"); pause(); } VmSize seems a bit larger than 100MB, and this seems ok, when adding the overhead of running a process: cat /proc/$$/status | grep VmSize VmSize: 116920 kB cat /sys/fs/cgroup/memory/group1/memory.stat | grep swap swap 0 total_swap 0 cat /proc/$$/status | grep -i swap VmSwap: 0 kB I would expect that the swap will be 60M according to the link to the memcg_test.txt mentioned earlier. Any ideas ? Regards, Kevin