CCS v5.2.1: cpu cycles value problem

Hello,

Nikita Zograbyan

In version 5.1.0 cpu clock shows me that my function, for example, performed for 1000 cpu cycles (it's not matter what function it is...I check it on each other functions).

Nikita Zograbyan

Now in v5.2.1 cpu clock shows that  functions performed for over 1000000 cpu cycles.

That is quite a difference. How are you measuring the cycles? Are you using the profile clock in CCS?

Thanks

ki

Hello. I'm using the clock from Run menu in debug session (Run -> Clock -> Enable).  I choose "Cpu Execute Cycles" in setup menu and reset method set to manual. Then I put breakpoint at the start of function and at the end of it. After that I reset clock and run this function. On the bottom panel I look at the value of execute cycles (like ccs v3.3). I did it in ccs v5.1.0 and ccs v.5.2.1, but results are different every time. Is it a wrong approach to measure performance of separate functions? I don't use profile clock in ccs. If it lets me to show the real performance of functions, I'l be grateful if you explain how to use profile clock.

Thanks.

p.s. sorry for my poor English

Nikita Zograbyan

I'm using the clock from Run menu in debug session (Run -> Clock -> Enable).  I choose "Cpu Execute Cycles" in setup menu and reset method set to manual.

Ok, I was suspecting that the clock was setup to count different events between the two CCS versions. But it looks like you made sure that the same exact settings are being used for both.Is "Cpu Execute Cycles" the exact name? I was expecting something different, like "cycle.Total" or something like that.

I'm definitely surprised at the clock value difference. There is normally a small difference but you are seeing a huge difference. Your use case seems fine, nothing wrong there.

Could you send me a small test case? I just need any small example where you see a big difference between the counts between the two versions.

Thanks

ki

Yes, "Cpu Execute Cycles" is the exact name. I saw "cpu.Total" when I worked with c6455 simulator. But now I work with tms320c6455 dsk and "cpu.Total" is not in clock tool. I can send You test project (generating complex signal) maded with using IQmath library. I execute it in CCS v5.1.1 and v.5.2.1 and results are: about 150 cycles in v5.1.1 vs about 242000 cycles in v5.2.2. Where can I send this project?

upd

Here is the test project with generation complex signal. Can you help me to understand why the cycles value so different in different CCS versions.

0172.IQ_test.zip

up

Thanks for the explanation.