> From: Moger, Babu [mailto:babu.mo...@amd.com] > On 10/16/2018 11:56 AM, Fenghua Yu wrote: > > With more and more resctrl features are being added by Intel, AMD and > > ARM, a test tool is becoming more and more useful to validate that > > both hardware and software functionalities work as expected. > > I like the initiative here. It is always good to have a single code base. > > One question. I see that there is a tool at > https://github.com/intel/intel-cmt-cat to test and verify the functionality > of resctrl feature. I also see some of the distros have this tool already. > Is this tool going to replace intel-cmt-cat? I have not looked at the > patches closely yet.
No, the selftest in this patch set will not replace intel-cmt-cat or vice versa. The selftest in this patch set has a different purpose from intel-cmt-cat: the selftest is a test tool which validates resctrl functionalities while intel-cmt-cat is mainly a utility that provides base library for higher level applications including performance analysis tools, benchmark measurement tools, and potential resctrl tests. For example, running MBA test in the selftests tells MBA working or not working (fail/pass) right way. The intel-cmt-cat doesn't have this testing capability unless we extend the tool. And intel-cmt-cat is maintained and developed by Intel. I don't think it's easy to extend it to AMD and ARM features. The selftest will be maintained and developed by the community and will hopefully cover all architectures. We have seen a few issues recently in resctrl and may see more issues while expending the features. A convevient selftest may be useful to help identify and fix those potential issues. Thanks. -Fenghua