Messages in this thread | | | Date | Thu, 23 Apr 2015 17:43:43 -0300 | From | Daniel Bristot de Oliveira <> | Subject | Re: [RFC][PATCH 0/4] tracing: Add new hwlat_detector tracer |
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On 04/23/2015 05:21 PM, Thomas Gleixner wrote: > I know of a SMI event counter which is available on newer CPUs and > Intel promised to add a SMI cycle counter as well. I have no idea > whether that one ever materialized. PeterZ should know.
The turbostat shows how many SMIs happened during a period. To do it, it reads the 'MSR_SMI_COUNT' counter. The code's comment says this counter is there since Nehalem.
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