Messages in this thread | | | Date | Thu, 21 Jun 2012 15:29:14 +0200 | From | Robert Richter <> | Subject | Re: What is the right practice to get new code upstream( was Fwd: [patch] a simple hardware detector for latency as well as throughput ver. 0.1.0) |
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On 14.06.12 12:04:56, Peter Zijlstra wrote: For AMD there's only event 02Bh, which is SMIs Received. I'm not sure it > has anything like the FREEZE or if the event is modifyable to count the > cycles in SMI.
Peter, which use cases do you have in mind. Is it to root cause latencies? Or just to see what happens on the system, you long it spends in smi mode? On current systems counting smi cycles seems not to be possible.
-Robert
-- Advanced Micro Devices, Inc. Operating System Research Center
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