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Turbostat collects statistics and outputs results in "topology order", which means it prioritizes the core# over the cpu#. The strategy is to minimize wakesups to a core -- which is important when measuring an idle system. But core order is problematic, because Linux core#'s are physical (within each package), and thus subject to APIC-id scrambling that may be done by the hardware or the BIOS. As a result users may be are faced with rows in a confusing order: sudo turbostat -q --show topology,Busy%,CPU%c6,UncMHz sleep 1 Core CPU Busy% CPU%c6 UncMHz - - 1.25 72.18 3400 0 4 7.74 0.00 1 5 1.77 88.59 2 6 0.48 96.73 3 7 0.21 98.34 4 8 0.14 96.85 5 9 0.26 97.55 6 10 0.44 97.24 7 11 0.12 96.18 8 0 5.41 0.31 3400 8 1 0.19 12 2 0.41 0.22 12 3 0.08 32 12 0.04 99.21 33 13 0.25 94.92 Abandon the legacy "core# topology order" in favor of simply ordering by cpu#, with a special case to handle HT siblings that may not have adjacent cpu#'s. sudo ./turbostat -q --show topology,Busy%,CPU%c6,UncMHz sleep 1 1.003001 sec Core CPU Busy% CPU%c6 UncMHz - - 1.38 80.55 1600 8 0 10.94 0.00 1600 8 1 0.53 12 2 2.90 0.45 12 3 0.11 0 4 1.96 91.20 1 5 0.97 96.40 2 6 0.24 94.72 3 7 0.31 98.01 4 8 0.20 98.20 5 9 0.62 96.00 6 10 0.06 98.15 7 11 0.12 99.31 32 12 0.04 99.07 33 13 0.27 95.09 The result is that cpu#'s now take precedence over core#'s. Signed-off-by: Len Brown <len.brown@intel.com>