On 4/2/2012 9:13 PM, Chris Albertson wrote:
On Mon, Apr 2, 2012 at 4:28 PM, Mike S<[email protected]> wrote:
I've played around with different cpufreq setting, thinking it might be
related to the processor speed during an IRQ, but that seems to have minimal
impact (performance vs. conservative vs. ondemand).
I think your CPU goes into some power saving mode when there is no
load and takes some number of micro seconds to wake up after an
interrupt. Keeping a load on it prevents the sleep or power save
mode and hence the need to "wake up."
Then explain why setting the cpufreq governor to "performance" (which
locks it to the highest frequency (
http://www.mjmwired.net/kernel/Documentation/cpu-freq/governors.txt )
has no significant effect.
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