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| author | Len Brown <len.brown@intel.com> | 2018-06-01 12:35:53 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2018-06-01 23:12:40 -0400 |
| commit | be0e54c4ebbf106571292ee97b445fd25bc3525b (patch) | |
| tree | d83414271309704f3b3ee539e7424199e004b318 /tools/perf/scripts/python/call-graph-from-sql.py | |
| parent | e29dc460d6c5ec43967ea69cb28120a93a20e904 (diff) | |
tools/power turbostat: Build-in "Low Power Idle" counters support
Linux 4.15 exports the ACPI Low Power Idle Table's
counters in /sys/devices/system/cpu/cpuidle/
low_power_idle_cpu_residency_us
Show this in the "CPU%LPI" column.
Today this reflects the "North Complex"
residency in PC10, so expect it to
closely follow "Pk%pc10".
low_power_idle_system_residency_us
Show this in the "SYS%LPI" column.
Today, this reflects the North is in PC10,
plus the PCH is sufficiently quiescent
to save additional power via the "S0ix"
system state, as measured by the
PCH SLP_S0 counter.
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-sql.py')
0 files changed, 0 insertions, 0 deletions