Re: rtems_cpu_usage_report

[Ricardo Cardenes <rcardenes@gemini.edu>]

Hi,

We're just invoking rtems_cpu_usage_report(), provided by RTEMS itself.

Cheers,

Ricardo

On Thu, Apr 26, 2018 at 9:20 PM, Ralph Lange <ralph.lange@gmx.de> wrote:

Hi Matt,

Nice printout. Is this from the commonly used iocStats module [1]?

You seem to be facing an underflow effect of a 32bit unsigned that is being converted to double.

Cheers,

~Ralph

[1] https://github.com/epics-modules/iocStats

On Thu, Apr 26, 2018 at 11:51 PM Matt Rippa <mrippa@gemini.edu> wrote:

We're running EPICS 3.14.12.7, RTEMS 4.10.2 on the mvme3100 bsp.​ We just added a small support module to calculate cpu statistics.

https://github.com/gemini-rtsw

We're seeing corrupt calculations on some threads. Has anyone seen this? Any advice?

Thank you,

-Matt

tcs-sim-ioc> rtemsStatsReport   
-------------------------------------------------------------------------------
                             CPU USAGE BY THREAD
------------+----------------------------------------+---------------+---------
ID         | NAME                                   | SECONDS       | PERCENT
------------+----------------------------------------+---------------+---------
0x09010001 | IDLE                                   |    153.005592 |  66.361
0x0A010001 | UI1                                    |      6.594606 |   2.860
0x0A010002 | Imsg                                   |      0.000000 |   0.000 

[...]