Dwight Schauer wrote: > I'm trying to get the needed LXC kernel config options into the default Arch > Linux kernel package. > http://bugs.archlinux.org/task/16715 > > There is a concern about any potential drawbacks in enabling these options, > especially for those that don't use Linux containers. > > Is anyone aware of any negative impact (apart from size maybe) of having > these features being enabled? Especially for those not using these features? > > On Sat, Oct 17, 2009 at 7:32 PM, Dwight Schauer <dschauer@xxxxxxxxx> wrote: > > >> I just made it and it is somewhat archlinux specific, but others might find >> it useful. >> >> http://lxc.teegra.net/ >> >> -- >> Dwight >> >> >> >> >> > _______________________________________________ > Containers mailing list > Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx > https://lists.linux-foundation.org/mailman/listinfo/containers > > > In general the cgroup adds a small overhead at fork/exit when a subsystem make use of the cgroup_callbacks, for example the freezer. But that can be considered as negligeable. CONFIG_GROUP_SCHED=y CONFIG_FAIR_GROUP_SCHED=y CONFIG_RT_GROUP_SCHED=y CONFIG_CGROUP_SCHED=y CONFIG_CGROUPS=y CONFIG_CGROUP_NS=y CONFIG_CGROUP_FREEZER=y This one does not add any overhead. CONFIG_CGROUP_DEVICE=y For these ones, I don't know. CONFIG_CPUSETS=y CONFIG_PROC_PID_CPUSET=y AFAIR these following options add some overhead especially the memory resource controller. CONFIG_CGROUP_CPUACCT=y CONFIG_RESOURCE_COUNTERS=y CONFIG_CGROUP_MEM_RES_CTLR=y CONFIG_CGROUP_MEM_RES_CTLR_SWAP=y CONFIG_MM_OWNER=y The overhead and footprint of the following options are neligeable CONFIG_NAMESPACES=y CONFIG_UTS_NS=y CONFIG_IPC_NS=y CONFIG_USER_NS=y CONFIG_PID_NS=y CONFIG_NET_NS=y CONFIG_NET_CLS_CGROUP=y This one, no overhead. CONFIG_SECURITY_FILE_CAPABILITIES=y _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
