diff --git a/doc/src/analyze/cpu-usage-analyzer.qdoc b/doc/src/analyze/cpu-usage-analyzer.qdoc index 873abff8c08..dddea53102f 100644 --- a/doc/src/analyze/cpu-usage-analyzer.qdoc +++ b/doc/src/analyze/cpu-usage-analyzer.qdoc @@ -346,11 +346,11 @@ \li Some versions of Perf will not start recording unless given a certain minimum sampling frequency. Try with a \uicontrol {Sampling Frequency} of 1000. - \li On some devices, for example Boundary Devices i.MX6 Boards, the - Perf support is not very stable and the Linux kernel may randomly - fail to record data after some time. Perf can use different types - of events to trigger samples. You can get a list of available event - types by running \c {perf list} on the device and add + \li On some devices, in particular various i.MX6 Boards, the hardware + performance counters are dysfunctional and the Linux kernel may + randomly fail to record data after some time. Perf can use different + types of events to trigger samples. You can get a list of available + event types by running \c {perf list} on the device and add \c {-e } to the \uicontrol {Additional arguments} field to change the event type to be used. The choice of event type affects the performance and stability of the sampling.