Messages in this thread | | | Date | Mon, 12 Mar 2012 20:46:30 +0000 | From | Matthew Garrett <> | Subject | Re: [PATCH 2/3] cpuidle: Add a debugfs entry to disable specific C state for debug purpose. |
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On Mon, Mar 12, 2012 at 05:21:33PM +0800, ShuoX Liu wrote:
> In addition, C state might have much impact on performance tuning, > as it takes > much time to enter/exit C states, which might delay interrupt > processing. With > the new debug option, developers could check if a deep C state could impact > performance and how much impact it could cause.
Would anyone doing performance tuning not be using the cpu_dma_latency interface?
-- Matthew Garrett | mjg59@srcf.ucam.org
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