MCPS Streamline

Hi abhishek,

Streamline arrives at this figure by tapping into the Performance Monitoring Unit hardware counters of a processor (see here for a functional description of the PMU on a Cortex-A7 as an example): PMU functional description

In other words, it's sampled directly from the hardware.

Thanks,

Joe

Hi abhishek,

Streamline arrives at this figure by tapping into the Performance Monitoring Unit hardware counters of a processor (see here for a functional description of the PMU on a Cortex-A7 as an example): PMU functional description

In other words, it's sampled directly from the hardware.

Thanks,

Joe

Hi Joe,

Thanks for the response.  How is self samples related to clock cycles?

Regards,

abhishek

Hi abhishek,

No problem. Since Streamline is sample based (you decide how often you want Streamline to sample, up to 1 ms accuracy), it periodically checks which function a program is in and reports back. This allows you to see where in the code a system is spending the most time.

Streamline also periodically samples the PMU to collect a value for clock cycles, so what you see is a representative value.

If you're looking for a more in-depth explanation, I'm sure my colleagues wadecherry or paulbarrick from the Streamline team could help out.

Cheers,

Joe

Hi abhishek,

To message another member on the community, you need to be following one another. They'll jump in on this thread though with an explanation potentially.

Thanks,

Joe