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question about system loading

1330hayacool7102
Guru 10655 points

hi,

I use rdk3.0 and  function Vsys_printDetailedStatistics() 

I can see the performance as below

 [m3video]
 [m3video]  161406027: LOAD: CPU: 23.5% HWI: 1.4%, SWI:1.6%
 [m3video]
 [m3video]  161406027: LOAD: TSK: IPC_IN_M30          : 1.0%
 [m3video]  161406027: LOAD: TSK: IPC_BITS_OUT0       : 2.4%
 [m3video]  161406027: LOAD: TSK: ENC0                : 3.9%
 [m3video]  161406028: LOAD: TSK: DEC0                : 0.6%
 [m3video]  161406028: LOAD: TSK: ENC_PROCESS_TSK_0   : 12.1%
 [m3video]  161406028: LOAD: TSK: MISC                : 0.5%
 [m3video]

if I want to see the system loading for each HDVICP, how could I do that?

  • 0
    TI__Guru 59700 points

    You will see statistics like:

    [m3video]  264820: HDVICP-ID:0
     [m3video] All percentage figures are based off totalElapsedTime
     [m3video]    totalAcquire2wait :6 %
     [m3video]    totalWait2Isr :64 %
     [m3video]    totalIsr2Done :0 %
     [m3video]    totalWait2Done :64 %
     [m3video]    totalDone2Release :0 %
     [m3video]    totalAcquire2Release :76 %
     [m3video]    totalAcq2acqDelay :23 %
     [m3video]    totalElapsedTime in msec :  227838
     [m3video]    numAccessCnt:   98428
     [m3video]   IVA-FPS :     433
     [m3video]   Average time spent per frame in microsec:    1480
     [m3video]  264821: HDVICP-ID:1
     [m3video] All percentage figures are based off totalElapsedTime
     [m3video]    totalAcquire2wait :5 %
     [m3video]    totalWait2Isr :60 %
     [m3video]    totalIsr2Done :0 %
     [m3video]    totalWait2Done :60 %
     [m3video]    totalDone2Release :0 %
     [m3video]    totalAcquire2Release :72 %
     [m3video]    totalAcq2acqDelay :27 %
     [m3video]    totalElapsedTime in msec :  227840
     [m3video]    numAccessCnt:   87493
     [m3video]   IVA-FPS :     385
     [m3video]   Average time spent per frame in microsec:    1562
     [m3video]  264822: HDVICP-ID:2
     [m3video] All percentage figures are based off totalElapsedTime
     [m3video]    totalAcquire2wait :5 %
     [m3video]    totalWait2Isr :62 %
     [m3video]    totalIsr2Done :0 %
     [m3video]    totalWait2Done :63 %
     [m3video]    totalDone2Release :0 %
     [m3video]    totalAcquire2Release :74 %
     [m3video]    totalAcq2acqDelay :25 %
     [m3video]    totalElapsedTime in msec :  227840
     [m3video]    numAccessCnt:   92702
     [m3video]   IVA-FPS :     408
     [m3video]   Average time spent per frame in microsec:    1523
     [m3video]   

     

    which gives loading of each HDVICP.

    Total loading is given by

    totalAcquire2Release value

     

  • 0 in reply to Badri Narayanan
    Guru 10655 points

    Q1. By your speaking, each HDVICP's loading of our following case is (HDVICP-0)9%, (HDVICP-1)0%, (HDVICP-2)0%. Right?

     [m3video]      161403506: HDVICP-ID:0
     [m3video] All percentage figures are based off totalElapsedTime
     [m3video]               totalAcquire2wait :9 %
     [m3video]               totalWait2Isr :42 %
     [m3video]               totalIsr2Done :0 %
     [m3video]               totalWait2Done :43 %
     [m3video]               totalDone2Release :0 %
     [m3video]               totalAcquire2Release :9 %
     [m3video]               totalAcq2acqDelay :1 %
     [m3video]               totalElapsedTime in msec :96919440
     [m3video]               numAccessCnt:78892920
     [m3video]              IVA-FPS :     814
     [m3video]              Average time spent per frame in microsec:      12
     [m3video]      161403507: HDVICP-ID:1
     [m3video] All percentage figures are based off totalElapsedTime
     [m3video]               totalAcquire2wait :0 %
     [m3video]               totalWait2Isr :0 %
     [m3video]               totalIsr2Done :0 %
     [m3video]               totalWait2Done :0 %
     [m3video]               totalDone2Release :0 %
     [m3video]               totalAcquire2Release :0 %
     [m3video]               totalAcq2acqDelay :0 %
     [m3video]               totalElapsedTime in msec :       0
     [m3video]               numAccessCnt:       0
     [m3video]              IVA-FPS :       0
     [m3video]              Average time spent per frame in microsec:       0
     [m3video]      161403508: HDVICP-ID:2
     [m3video] All percentage figures are based off totalElapsedTime
     [m3video]               totalAcquire2wait :0 %
     [m3video]               totalWait2Isr :0 %
     [m3video]               totalIsr2Done :0 %
     [m3video]               totalWait2Done :0 %
     [m3video]               totalDone2Release :0 %
     [m3video]               totalAcquire2Release :0 %
     [m3video]               totalAcq2acqDelay :0 %
     [m3video]               totalElapsedTime in msec :       0
     [m3video]               numAccessCnt:       0
     [m3video]              IVA-FPS :       0
     [m3video]              Average time spent per frame in microsec:       0
     [m3video]

    Q2. Could you explain the meaning of each the above item? Thanks.

  • 0 in reply to 1330hayacool7102
    TI__Guru 59700 points

    There is something wrong with the stats you have shared. acquire2Release = SUM of acquire2Wait + Wait2Done + Delta. You can see it in the stats I shared. The only item you should care abt from system load is acquire2release. You don't have to understand the other numbers. They are for debug purpose.

  • 0 in reply to Badri Narayanan
    Guru 10655 points

    There is something wrong with the stats you have shared.
    - how did I know what's up with my system?

    acquire2Release = SUM of acquire2Wait + Wait2Done + Delta. You can see it in the stats I shared.
    - where's "Delta"? I can't find it.

  • 0 in reply to 1330hayacool7102
    Guru 10655 points

    Hi Badri,

      Any idea about my two above question?

  • 0 in reply to 1330hayacool7102
    TI__Guru 59700 points

    Delta is system overhead which cannot be measured. It is not printed.

    You should see

    acquire2Release >= SUM of acquire2Wait + Wait2Done

    in IVA stats.If this is not the case the stats are wrong.

    I don't know what is wrong with your stats as I have not seen any such issue. If you have done any changes to RDK undo them and check the stats. Also try checking the stats every 10 seconds and see if they are correct.

     

  • 0 in reply to Badri Narayanan
    Guru 10655 points

    Hi badri,

    By my testing and I got following,  totalAcquire2Release for HDVICP0 is almost full.

     [m3video]      153426: HDVICP-ID:0
     [m3video] All percentage figures are based off totalElapsedTime
     [m3video]               totalAcquire2wait :9 %
     [m3video]               totalWait2Isr :87 %
     [m3video]               totalIsr2Done :0 %
     [m3video]               totalWait2Done :87 %
     [m3video]               totalDone2Release :0 %
     [m3video]               totalAcquire2Release :98 %
     [m3video]               totalAcq2acqDelay :1 %
     [m3video]               totalElapsedTime in msec :   69059
     [m3video]               numAccessCnt:   56352
     [m3video]              IVA-FPS :     816
     [m3video]              Average time spent per frame in microsec:    1065
     [m3video]      153426: HDVICP-ID:1
     [m3video] All percentage figures are based off totalElapsedTime
     [m3video]               totalAcquire2wait :0 %
     [m3video]               totalWait2Isr :0 %
     [m3video]               totalIsr2Done :0 %
     [m3video]               totalWait2Done :0 %
     [m3video]               totalDone2Release :0 %
     [m3video]               totalAcquire2Release :0 %
     [m3video]               totalAcq2acqDelay :0 %
     [m3video]               totalElapsedTime in msec :       0
     [m3video]               numAccessCnt:       0
     [m3video]              IVA-FPS :       0
     [m3video]              Average time spent per frame in microsec:       0
     [m3video]      153427: HDVICP-ID:2
     [m3video] All percentage figures are based off totalElapsedTime
     [m3video]               totalAcquire2wait :0 %
     [m3video]               totalWait2Isr :0 %
     [m3video]               totalIsr2Done :0 %
     [m3video]               totalWait2Done :0 %
     [m3video]               totalDone2Release :0 %
     [m3video]               totalAcquire2Release :0 %
     [m3video]               totalAcq2acqDelay :0 %
     [m3video]               totalElapsedTime in msec :       0
     [m3video]               numAccessCnt:       0
     [m3video]              IVA-FPS :       0
     [m3video]              Average time spent per frame in microsec:       0

    And I found the CPU loading below is just 23% instead of 33%,  did you know why? what's the relationship between the following and the above?

     [m3video]
     [m3video]  155948: LOAD: CPU: 23.0% HWI: 1.4%, SWI:1.5%
     [m3video]
     [m3video]  155948: LOAD: TSK: IPC_IN_M30          : 1.0%
     [m3video]  155948: LOAD: TSK: IPC_BITS_OUT0       : 2.3%
     [m3video]  155948: LOAD: TSK: ENC0                : 4.1%
     [m3video]  155948: LOAD: TSK: DEC0                : 0.7%
     [m3video]  155948: LOAD: TSK: ENC_PROCESS_TSK_0   : 11.6%
     [m3video]  155948: LOAD: TSK: MISC                : 0.4%
     [m3video]

     

  • 0 in reply to 1330hayacool7102
    TI__Guru 59700 points

    If HDVICP loading is 100% it will cause frames to be dropped as system will no longer be realtime. This will result in lesser CPU load as less frames per second will be processed.