On Tue, 16 Oct 2012, Glauber Costa wrote: > > + memory.kmem.limit_in_bytes # set/show hard limit for kernel memory > + memory.kmem.usage_in_bytes # show current kernel memory allocation > + memory.kmem.failcnt # show the number of kernel memory usage > hits limits > + memory.kmem.max_usage_in_bytes # show max kernel memory usage recorded
Does it actually make sense to limit kernel memory? The user generally has no idea how much kernel memory a process is using and kernel changes can change the memory footprint. Given the fuzzy accounting in the kernel a large cache refill (if someone configures the slab batch count to be really big f.e.) can account a lot of memory to the wrong cgroup. The allocation could fail. Limiting the total memory use of a process (U+K) would make more sense I guess. Only U is probably sufficient? In what way would a limitation on kernel memory in use be good? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
