C3 and laptops

C3 and laptops

Posted Jul 2, 2007 9:14 UTC (Mon) by dion (subscriber, #2764)
In reply to: OLS: Three talks on power management by jbailey
Parent article: OLS: Three talks on power management

Strange, my new Fujutsu Siemens Amilo Si 1520 spends 98% of its time in C3 with the CPU throttled down to 1GHz (with the system idle).

Powertop reports that the cpu gets around 300 wakeups pr. second, which I thought was quite bad, so I tried the tickless kernel and that went down to around 100wakeups/s.

I can't complain though, even with a full kernel compile on battery (that tickless kernel) I still got slightly more than 4.5 hours of runtime.

---

(Log in to post comments)