Lines Matching refs:timer
7 the tracer sets a periodic timer that wakes up a thread. The thread then
9 time* and the *absolute time* that the timer was set to expire. The main
47 prints two lines at every activation. The first is the *timer latency*
49 The second is the *timer latency* observed by the thread. The ACTIVATION
56 or by thread masking interrupts. Once the timer happens, the delay
72 timer latency at the *irq* context higher than the configured
75 timer latency at the *thread* context is higher than the configured
98 In this case, the root cause of the timer latency does not point to a
99 single cause but to multiple ones. Firstly, the timer IRQ was delayed
101 stacktrace section). Then the timer interrupt that wakes up the timerlat
118 External timer irq thread
141 noise causes the major factor for the timer latency, because of preempt or
171 contribution to the *timer latency* and the stack trace, saved during
203 timer in the future and wait for it as the regular kernel thread does.
205 When the timer IRQ fires, the timerlat IRQ will execute, report the
211 the timer, timerlat will return to the read() system call. At this point,
220 a timer, and go to sleep for the following activation.