kernel - Fresh Install of 16.10 results in CPU cores running less than normal - Ask Ubuntu


installed 16.10 server on ibm 3650 m3 2 quad core xeon e5630 processors. server runs 16 compute intensive apps driving each core 100%. after install of 16.10, cores (maybe 2 or 3) run @ 100% others fail exceed 50% length of time. system avgs 100% busy everyday after 16.10 install, ran @ 50%. top showed 51% busy , 49% idle 16 jobs running. fell 16.04 , 16 jobs ran normally, driving each core 100%. suspect there might possible cpu firmware problem in 4.8 kernel. else encountered issue. btw, 16.10 installed on other cpu models e55xx , i5 series don't seem have problem. else encountered issue?


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