On 03-Mar-23 11:23 AM, Huang, Ying wrote: > > What is the memory accessing pattern of the workload? Uniform random or > something like Gauss distribution? Multiple iterations of uniform access from beginning to end of the memory region. > > Anyway, it may take some time for the original method to scan enough > memory space to trigger enough hint page fault. We can check > numa_pte_updates to check whether enough virtual space has been scanned. I see that numa_hint_faults is way higher (sometimes close to 5 times) than numa_pte_updates. This doesn't make sense. Very rarely I do see saner numbers and when that happens the benchmark score is also much better. Looks like an issue with the default kernel itself. I will debug this further and get back. Regards, Bharata.
