Hi Shuah, On 12/16/24 7:18 AM, Maciej Wieczor-Retman wrote: > > Sub-Numa Clustering (SNC) allows splitting CPU cores, caches and memory > into multiple NUMA nodes. When enabled, NUMA-aware applications can > achieve better performance on bigger server platforms. > > SNC support was merged into the kernel [1]. With SNC enabled > and kernel support in place all the tests will function normally (aside > from effective cache size). There might be a problem when SNC is enabled > but the system is still using an older kernel version without SNC > support. Currently the only message displayed in that situation is a > guess that SNC might be enabled and is causing issues. That message also > is displayed whenever the test fails on an Intel platform. > > Add a mechanism to discover kernel support for SNC which will add more > meaning and certainty to the error message. > > Add runtime SNC mode detection and verify how reliable that information > is. > > Series was tested on Ice Lake server platforms with SNC disabled, SNC-2 > and SNC-4. The tests were also ran with and without kernel support for > SNC. > > Series applies cleanly on kselftest/next. > Could you please consider this series for inclusion? Thank you very much. Reinette
