On Mon, Feb 13, 2023 at 12:34 AM Victor Stewart <v@nametag.social> wrote: > > attempted to use hugetlb resource control for the first time. running 6.1.9 > > create the subdirectory, then enable the hugetlb controller. reading the > initial value of hugetlb.2MB.rsvd.max returns "max". i write 128 and receive a > return value of 3. but then read hugetlb.2MB.rsvd.max and it now returns 0. > same exact thing happens for hugetlb.2MB.max ahh, it takes reads/writes with bytes as units, not 2MB pages. kind of confusing and unexpected, even though memory works the same. > > so clearly the write is secretly failing somewhere even though the write > operation return success? > > there are plenty of pages available: > > HugePages_Total: 4096 > HugePages_Free: 4096 > HugePages_Rsvd: 0 > HugePages_Surp: 0 > Hugepagesize: 2048 kB > Hugetlb: 13631488 kB > > none of the scarce documentation on this controller leads me to believe there's > any required configuration beyond the above. so completely bewildered as to > what's going wrong?
