Matt Corallo <kernel@xxxxxxxxxxx> writes: > .config follows. I have not tested with 64K pages as, sadly, I have a > large BTRFS volume that was formatted on x86, and am thus stuck with 4K > pages. Note that this is roughly the Debian kernel, so it has whatever > patches Debian defaults to applying, a list of which follows. > What is the test you are running? I tried a 4K page size config on P9. I am running ltp test suite there. Also tried few thp memremap tests. Nothing hit that. root@:~/tests/ltp/testcases/kernel/mem/thp# getconf PAGESIZE 4096 root@ltc-boston123:~/tests/ltp/testcases/kernel/mem/thp# grep thp /proc/vmstat thp_fault_alloc 641141 thp_fault_fallback 0 thp_collapse_alloc 90 thp_collapse_alloc_failed 0 thp_file_alloc 0 thp_file_mapped 0 thp_split_page 1 thp_split_page_failed 0 thp_deferred_split_page 641150 thp_split_pmd 24 thp_zero_page_alloc 1 thp_zero_page_alloc_failed 0 thp_swpout 0 thp_swpout_fallback 0 root@:~/tests/ltp/testcases/kernel/mem/thp# -aneesh
