dhrystone_benchmark example for A53 core fails in debug mode with following error message:

Measured time too small to obtain meaningful results
Please increase number of runs 

It seems that debug mode has a higher optimization level compared to release for this example, this is because in CFLAGS_common -O3 is the make file for dhrystone_benchmark (for nortos, freertos , feertos-smp) while optimization for release mode is set to -O2:

https://github.com/TexasInstruments/mcupsdk-core/blob/next/source/dhrystone_benchmark/makefile.am64x.a53.gcc-aarch64.freertos#L51 

https://github.com/TexasInstruments/mcupsdk-core/blob/next/source/dhrystone_benchmark/makefile.am64x.a53.gcc-aarch64.freertos-smp#L51 

https://github.com/TexasInstruments/mcupsdk-core/blob/next/source/dhrystone_benchmark/makefile.am64x.a53.gcc-aarch64.freertos-smp#L51 

Removing this -O3 from CFLAGS_common resolves this issue and set correct optimization levels for debug and release binaries.