On 6/10/19 1:58 PM, Yu-cheng Yu wrote: >>> On each memory request, the kernel then must consider a percentage of >>> allocated space in its calculation, and on systems with less memory >>> this quickly becomes a problem. >> I'm not sure what you're referring to here? Are you referring to our >> overcommit limits? > Yes. My assumption has always been that these large, potentially sparse hardware tables *must* be mmap()'d with MAP_NORESERVE specified. That should keep them from being problematic with respect to overcommit.
