WORKLOAD REPRODUCTION

Put the system through its paces.

Repeatable browser workloads for investigating intermittent instability.

Checking capabilities

Workload execution, not a hardware diagnosis. Completion does not mean the hardware is healthy. Keep this page visible, connect AC power and prevent system sleep for unattended sessions.

Configure a session

Workload profile

CPU, GPU, memory and local video together.

Active duration

Intensity

Intensity is a relative setting, not a utilisation percentage. Paused intervals do not count.

Advanced controls

CPU workers

CPU duty cycle (%)

Render size (px)

Shader iterations

GPU passes/frame

Memory target (MiB)

Memory access

Video streams

Cycle memory allocations Workload seed

Sleep protection is checked when a session starts.

Session activity

Ready when you are

OBSERVED ACTIVE TIME

00:00:00

REMAINING

00:15:00

Gaps and paused intervals are reported separately.

Show or hide the GPU and video previews above. Both use muted colour with bounded brightness. Hiding a view does not stop its workload.

Local session record

No session recorded. The latest session is kept on this device.

Technician notes (optional, local only)

Readiness & limitations

LOCAL

Checking offline availability…

Unattended operation & Terminal helper

Keep Safari visible and the lid open. Screen wake lock is optional and cannot guarantee uninterrupted execution. Configure macOS sleep settings if it is unavailable.

Optional: run caffeinate -dims in Terminal to inhibit idle display/system sleep and system sleep on AC power. Keep Terminal open; press Control-C in that Terminal to stop it. It cannot prevent forced sleep, lid closure or browser suspension. No administrator access is needed.

Target: Safari 15.6.1+ on a compatible macOS release, starting at Catalina 10.15.7. Intel and Apple Silicon validation is pending. Older Safari and GPU fallbacks are deferred.