Sample traces

Download a ready-made LTTng CTF session to try Corelapse without recording on Linux first.

trace-irq

A short kernel trace with scheduler activity, hard IRQ handlers, and wakeups. Good for exploring the per-CPU timeline, red IRQ bands, and yellow wakeup markers.

sched_switch sched_wakeup sched_waking irq_handler_entry irq_handler_exit
Download trace-irq.zip

~180 KB zipped · opens as folder kernel_trace_1/

Open in Corelapse

  1. Download and unzip trace-irq.zip.
  2. Launch Corelapse on your Mac (macOS 14+).
  3. Choose File → Open Trace… (⌘O).
  4. Select the unzipped kernel_trace_1 folder (it contains a kernel/ directory).
  5. The scheduler timeline appears immediately. Turn on IRQs and Wakeups in the toolbar for overlay bands and markers.

The free tier includes the full scheduler timeline. IRQ and wakeup overlays require Full Access, a one-time in-app purchase.

Recording your own traces

See in-app Help → Corelapse Help (⌘?) for LTTng recording recipes, or the support page for overlay-specific commands.