[maemo-developers] Where are the N900 "too much time at 600Mhz" safeguards?

From: Javier S. Pedro maemo at javispedro.com
Date: Thu Jan 28 00:43:11 EET 2010
When I got my N900, one of the first things I noticed is that (as measured by
powertop) I could never get a 100% ratio at 600 Mhz, but more like 95%. I 
quickly assumed this was the safeguard for the issue Igor Stoppa talked about
at the Maemo Summit.

However, I've noticed today (as suggested by a tmo post) that the above is not
caused by any special modification in the kernel, but rather because of the
CPU idling while waiting for the SGX / some other hw (so, testing methodology
failure on my part :) ).

Thus, given any task bounded by raw CPU throughput, the device will happily
clock itself at 600Mhz, even for hours. Doesn't that contradict what Igor said
at the summit?


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