Bharata B Rao <bharata@xxxxxxx> writes: > 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. I guess this is sequential accesses instead of random accesses with uniform distribution. >> >> 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. Yes. It appears that something is wrong. Best Regards, Huang, Ying
