linux - Limit memory bandwidth cgroups without NUMA -

i trying limit bandwidth of process memory. have 2 cgroups (cgroup1 , cgroup2) processes in them. can limit amount of memory used each cgroup. if keep calling malloc() , free() , saturating memory bus, influence each other.

how limit this? don't have 2 different memory nodes, , no numa.

this not possible. supported subsystems are:

• blkio — subsystem sets limits on input/output access , block devices such physical drives (disk, solid state, usb, etc.).
• cpu — subsystem uses scheduler provide cgroup tasks access cpu.
• cpuacct — subsystem generates automatic reports on cpu resources used tasks in cgroup.
• cpuset — subsystem assigns individual cpus (on multicore system) , memory nodes tasks in cgroup.
• devices — subsystem allows or denies access devices tasks in cgroup.
• freezer — subsystem suspends or resumes tasks in cgroup.
• memory — subsystem sets limits on memory use tasks in cgroup, , generates automatic reports on memory resources used tasks.
• net_cls — subsystem tags network packets class identifier (classid) allows linux traffic controller (tc) identify packets originating particular cgroup task.
• net_prio — subsystem provides way dynamically set priority of network traffic per network interface.
• ns — namespace subsystem.

a recent systems research paper introduced new controller achieve , has made associated code available.

an alternative mmap file , set blkio settings on (not sure if work). then, have program read/write variables file instead of using malloc (ugly!).