I believe this is a Skylake and there is a known bug in the Skylake
metric DRAM_Parallel_Reads as described here:
Fixing the bug needs more knowledge than what is available in manuals.
Hopefully Intel can take a look.
Oh I missed the original mail for some reason. Yes it should be cmask instead of thresh
for client. I think thresh is used on the server uncore only, not on the client.
Jin Yao, can you send a patch please?