Scheduling Sources

Scheduling sources capture nondeterministic behavior in thread scheduling and timer delivery.

Sources

• sleep_jitter — nanosleep wakeup timing variability
• thread_lifecycle — thread create/join timing
• pe_core_arithmetic — P-core/E-core migration timing
• dispatch_queue_timing — GCD queue scheduling timing
• timer_coalescing — timer coalescing wakeup variance
• preemption_boundary — preemption boundary timing gaps