Posts mit dem Label CPU werden angezeigt. Alle Posts anzeigen
Posts mit dem Label CPU werden angezeigt. Alle Posts anzeigen

Sonntag, 10. Juni 2012

Beat me! (laptop power consumption)


Settings:
- Display off (don't know why backlight still consumes power, any suggestions?)
- wifi blocked via rfkill
- powersave governor
- disabled cpu 123, only 0 active (on the fly)
- hdparm -B 1 -S 1
- vm writeback (60 seconds, stock Slackware)
- disabled fan (loading thinkpad_acpi module via options thinkpad_acpi fan_control=1 (yeah, I cheated :)))
- mounted root with 'relatime' param to reduce disk spin-up
- enabled GPU RC6 mode via kernel params (pcie_aspm=force acpi=noirq i915.i915_enable_rc6=1)

Look at the right to see what laptop I use!

Sonntag, 2. Oktober 2011

Measuring compile time to check overclocking of cpu

Step 1:
Use standard cpu clock and a source of medium size:
    time -p ./configure && make
and note down time next to 'real'.

Step2:
Remove sources, extract again, overclock cpu and run

    time -p ./configure && make
again. Compare the value next to 'real' with the noted down value.

Dienstag, 27. September 2011