CPU USAGE

[Inderjit Singh]

Hi,

I wanted to have an overview on CPU usage but I'm getting strange values. Basically every 5 secs I want a report from my init task:

while(true) {
  rtems_cpu_usage_reset();
  sleep(5);
  rtems_cpu_usage_report();
}

The first time the data seems OK on the idle system but from the second output then I can't make any sense of it. Have I missed something?

The result is:
-------------------------------------------------------------------------------
                              CPU USAGE BY THREAD
------------+----------------------------------------+---------------+---------
 ID         | NAME                                   | SECONDS       | PERCENT
------------+----------------------------------------+---------------+---------
 0x09010001 | IDLE                                   |      4.995655 |  99.135
 0x0A010001 | CCRx                                   |      0.000000 |   0.000
 0x0A010002 | TATx                                   |      0.000000 |   0.000
 0x0A010003 | UI1                                    |      0.070863 |   1.398
 0x0A010004 | MMTD                                   |      0.000000 |   0.000
 0x0A010005 | MMTQ                                   |      0.000000 |   0.000
 0x0A010006 | HKTQ                                   |      0.000000 |   0.000
 0x0A010007 | TMTQ                                   |      0.000000 |   0.000
 0x0A010008 | TMTT                                   |      0.000000 |   0.000
 0x0A010009 | TMTU                                   |      0.000000 |   0.000
 0x0A01000A | TCTQ                                   |      0.000000 |   0.000
 0x0A01000B | TCTC                                   |      0.000000 |   0.000
 0x0A01000C | SPTQ                                   |      0.000000 |   0.000
 0x0A01000D | SPTR                                   |      0.000000 |   0.000
 0x0A01000E | UATQ                                   |      0.000000 |   0.000
 0x0A01000F | UATR                                   |      0.000000 |   0.000
 0x0A010010 | RMON                                   |      0.000000 |   0.000
------------+----------------------------------------+---------------+---------
 TIME SINCE LAST CPU USAGE RESET IN SECONDS:                          5.182685
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
                              CPU USAGE BY THREAD
------------+----------------------------------------+---------------+---------
 ID         | NAME                                   | SECONDS       | PERCENT
------------+----------------------------------------+---------------+---------
 0x09010001 | IDLE                                   |      6.521875 | 128.061
 0x0A010001 | CCRx                                   |      0.000000 |   0.000
 0x0A010002 | TATx                                   |      0.000000 |   0.000
 0x0A010003 | UI1                                    |      0.068974 |   1.339
 0x0A010004 | MMTD                                   |      0.000000 |   0.000
 0x0A010005 | MMTQ                                   |      0.000000 |   0.000
 0x0A010006 | HKTQ                                   |      0.000000 |   0.000
 0x0A010007 | TMTQ                                   |4294967293.864541 |3527535.838
 0x0A010008 | TMTT                                   |      0.000000 |   0.000
 0x0A010009 | TMTU                                   |      0.000000 |   0.000
 0x0A01000A | TCTQ                                   |      0.000000 |   0.000
 0x0A01000B | TCTC                                   |      0.000000 |   0.000
 0x0A01000C | SPTQ                                   |      0.035310 |   0.663
 0x0A01000D | SPTR                                   |      0.714130 |  13.368
 0x0A01000E | UATQ                                   |      0.000000 |   0.000
 0x0A01000F | UATR                                   |      0.000000 |   0.000
 0x0A010010 | RMON                                   |      0.000000 |   0.000
------------+----------------------------------------+---------------+---------
 TIME SINCE LAST CPU USAGE RESET IN SECONDS:                          5.405170
-------------------------------------------------------------------------------
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