maemo.org - Talk - View Single Post - [Announce] kernel-power stable v49 in Extras-Testing

StocChr	2011-12-01 , 20:44
Posts: 306 \| Thanked: 38 times \| Joined on Dec 2009 @ Austria	#2396

hi guys,

some people have big troubles with kernel-power-settings

with kp-settings three processes stay always ON ( per, core, iva2 )
so the battery drains very fast ( 8 hours from 100%-0% )

You will notice while the results are not that significantly different, there is a shitload more DMA activity and IRQing going on when kp-settings is installed. While the CPU is not hammering some hardware on the N900 is. Notice the extra 100% ONs in the power domain table for with kp-settings.

There is an ancient bug in kp-settings. I had issues with kp-settings since version 26. I never figured out why it caused all these wake ups I just know in some circumstances it does.

have someone an idea what can be wrong with the kernel-power-settings? i would really like to use kp-settings, maybe someone can fix it?

with kp-settings:

Code:

C#      | Ratio  | Avg/dura | Frequency | Ratio
--------+--------+----------+-----------+--------+
     C0 |   0.2% |          |  1150 MHz |   nan% |
     C1 |   0.0% |    0.3ms | 
     C2 |   3.3% |    9.4ms | 
     C3 |   4.2% |  104.3ms | 
     C4 |  92.3% | 1730.5ms |

Code:

Power domain activity breakdown
Domain  | % of time spent in states
--------+---------+---------+---------+---------+----------
usbhost |OFF: 100%|RET:   0%|INA:   0%| ON:   0%| now:(OFF)
    sgx |OFF: 100%|RET:   0%|INA:   0%| ON:   0%| now:(OFF)
    per |OFF:   0%|RET:   0%|INA:   0%| ON: 100%| now:(ON)
    dss |OFF: 100%|RET:   0%|INA:   0%| ON:   0%| now:(OFF)
    cam |OFF: 100%|RET:   0%|INA:   0%| ON:   0%| now:(OFF)
   core |OFF:   0%|RET:   0%|INA:   0%| ON: 100%| now:(ON)
   neon |OFF:  92%|RET:   4%|INA:   3%| ON:   0%| now:(ON)
    mpu |OFF:  92%|RET:   4%|INA:   3%| ON:   0%| now:(ON)
   iva2 |OFF:   0%|RET:   0%|INA:   0%| ON: 100%| now:(ON)

without kp-settings:

Code:

C#      | Ratio  | Avg/dura | Frequency | Ratio
--------+--------+----------+-----------+--------+
     C0 |   0.2% |          |  1150 MHz |   nan% |
     C1 |   0.0% |    0.2ms | 
     C2 |   0.2% |    2.4ms | 
     C3 |   2.9% |  215.9ms | 
     C4 |  96.7% | 2903.8ms |

Code:

Power domain activity breakdown
Domain  | % of time spent in states
--------+---------+---------+---------+---------+----------
usbhost |OFF: 100%|RET:   0%|INA:   0%| ON:   0%| now:(OFF)
    sgx |OFF: 100%|RET:   0%|INA:   0%| ON:   0%| now:(OFF)
    per |OFF:  96%|RET:   3%|INA:   0%| ON:   0%| now:(ON)
    dss |OFF: 100%|RET:   0%|INA:   0%| ON:   0%| now:(OFF)
    cam |OFF: 100%|RET:   0%|INA:   0%| ON:   0%| now:(OFF)
   core |OFF:  90%|RET:   5%|INA:   0%| ON:   3%| now:(ON)
   neon |OFF:  91%|RET:   6%|INA:   1%| ON:   0%| now:(ON)
    mpu |OFF:  91%|RET:   6%|INA:   1%| ON:   0%| now:(ON)
   iva2 |OFF: 100%|RET:   0%|INA:   0%| ON:   0%| now:(OFF)

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