• ARM v8 PMU Cycle counter
    All, When I am using the cycle counter in AArch64, I am not getting cycles properly. I have enabled read of pmccntr_el0 in user space using a small kernel module. I have sample code like: asm volatile...
  • Cortex-A9 PMU cycle counter not always incrementing at CPU frequency?
    Hello, I want to benchmark my program running on Linux on an Altera Cyclone V SoC board, but it turns out that the values returned from the ARM Cortex-A9 PMU cycle counter suggest that some sort of CPU...
  • Event counters take differing number of cycles
    We have some code that sets up various event counters and reads them.  We bracket this code with reads of the cycle counter.  We have noticed that depending on what event counter we are configuring, we...
  • PMU in arm11 results
    Hi, I am programming raspbery pi model b ARM1176 bare metal (in assembly and c). I need to calculate the clock cycles used to execute an assembly code. I am using the following code for PMU counter: ...
  • ARMv8 PMU access
    Hey guys, I'm running a sw in a multicore ARMv8 system and I'd like to know a bit more about the PMU component. There is a PMU per CPU, right? Is it possible from one CPU to access the other CPU...