A basic test using Imager 2.0.9 on a Pi5 running Trixie 64-bit:
wrote PiOS Trixie with desktop and Customisations (SSH, user, WiFi etc.) to a 64GB microSD card - all OK - booted a headless Pi5 from that - all OK.
Later, ran the analyse_performance.py on the .json I had captured for that write. (not sure if it has been updated to align with 2.0.9)
Strangely, the Operation Timeline graph showed Download (blue) as longer than Write (green) but the analysis output had it the other way round:
DOWNLOAD Duration: 42.1 s
WRITE Duration: 42.2 s
wrote PiOS Trixie with desktop and Customisations (SSH, user, WiFi etc.) to a 64GB microSD card - all OK - booted a headless Pi5 from that - all OK.
Later, ran the analyse_performance.py on the .json I had captured for that write. (not sure if it has been updated to align with 2.0.9)
Strangely, the Operation Timeline graph showed Download (blue) as longer than Write (green) but the analysis output had it the other way round:
DOWNLOAD Duration: 42.1 s
WRITE Duration: 42.2 s
Statistics: Posted by neilgl — Tue May 05, 2026 7:04 pm




