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    SubjectRe: [RFC PATCH] x86/CPU/AMD: Bring back Compute Unit ID
    On Thu, Feb 02, 2017 at 01:10:54PM +0100, Borislav Petkov wrote:
    > Now on to run the same thing on a bigger bulldozer.

    It looks differently on the bigger box:

    before:

    Performance counter stats for 'make -s -j17 bzImage' (3 runs):

    1333240.579196 task-clock (msec) # 9.271 CPUs utilized ( +- 0.03% )
    393,521 context-switches # 0.295 K/sec ( +- 0.27% )
    6,629,632,543 cache-misses ( +- 0.10% )
    51,570 cpu-migrations # 0.039 K/sec ( +- 1.21% )
    27,812,379 page-faults # 0.021 M/sec ( +- 0.05% )
    3,633,456,270,448 cycles # 2.725 GHz ( +- 0.03% )
    2,144,192,888,087 instructions # 0.59 insn per cycle ( +- 0.00% )
    476,225,081,234 branches # 357.194 M/sec ( +- 0.00% )
    25,294,199,758 branch-misses # 5.31% of all branches ( +- 0.02% )

    143.807894000 seconds time elapsed ( +- 0.89% )


    after:

    Performance counter stats for 'make -s -j17 bzImage' (3 runs):

    1330842.218684 task-clock (msec) # 9.047 CPUs utilized ( +- 0.14% )
    396,044 context-switches # 0.298 K/sec ( +- 0.60% )
    6,625,112,597 cache-misses ( +- 0.36% )
    60,050 cpu-migrations # 0.045 K/sec ( +- 1.11% )
    27,862,451 page-faults # 0.021 M/sec ( +- 0.08% )
    3,625,822,644,429 cycles # 2.724 GHz ( +- 0.12% )
    2,144,932,865,362 instructions # 0.59 insn per cycle ( +- 0.01% )
    476,375,898,692 branches # 357.951 M/sec ( +- 0.01% )
    25,226,837,830 branch-misses # 5.30% of all branches ( +- 0.09% )

    147.109189694 seconds time elapsed ( +- 0.49% )

    --
    Regards/Gruss,
    Boris.

    Good mailing practices for 400: avoid top-posting and trim the reply.

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