Lines Matching +full:down +full:- +full:counters
30 .Nd kernel time counters subsystem
32 The kernel uses several types of time-related devices, such as: real time clocks,
33 time counters and event timers.
35 is down.
36 Time counters are responsible for tracking purposes, when the system is running.
38 periodically, to run different time-based events.
41 Time counters are the lowest level of time tracking in the kernel.
45 performance-critical places like the process scheduler.
55 The goal of the time counters subsystem is to provide a unified way to access
58 Each driver implementing time counters registers them with the subsystem.
59 It is possible to see the list of present time counters, via the
63 .Bd -literal
64 kern.timecounter.choice: TSC-low(-100) HPET(950) i8254(0) ACPI-fast(900) dummy(-1000000)
65 kern.timecounter.tc.ACPI-fast.mask: 16777215
66 kern.timecounter.tc.ACPI-fast.counter: 13467909
67 kern.timecounter.tc.ACPI-fast.frequency: 3579545
68 kern.timecounter.tc.ACPI-fast.quality: 900
77 kern.timecounter.tc.TSC-low.mask: 4294967295
78 kern.timecounter.tc.TSC-low.counter: 4067509463
79 kern.timecounter.tc.TSC-low.frequency: 11458556
80 kern.timecounter.tc.TSC-low.quality: -100
84 .Bl -inset
98 higher-quality time counter when it registers, unless the