How to get higher precision of “CPU%” than that from TOP command?

Question

When I use TOP command, I could get the following info:

shell@android:/ $ top -n 1                                                     

User 31%, System 10%, IO         


        

Answer 1

Got this information from another thread:

3) Getting CPU info

~$ adb shell dumpsys cpuinfo

Output:

Load: 0.08 / 0.4 / 0.64 CPU usage from 42816ms to 34683ms ago: system_server: 1% = 1% user + 0% kernel / faults: 16 minor kdebuglog.sh: 0% = 0% user + 0% kernel / faults: 160 minor tiwlan_wq: 0% = 0% user + 0% kernel usb_mass_storag: 0% = 0% user + 0% kernel pvr_workqueue: 0% = 0% user + 0% kernel +sleep: 0% = 0% user + 0% kernel +sleep: 0% = 0% user + 0% kernel TOTAL: 6% = 1% user + 3% kernel + 0% irq

EDIT:

You can also try this command: echo $(adb shell ps | grep com.android.phone | awk '{ system("adb shell cat /proc/" $2 "/stat");}' | awk '{print $14+$15;}')

Also:

using top : This will show you the cpu stats top -b -n 1 |grep ^Cpu

using ps: This will show you the % cpu usage for each process. ps -eo pcpu,pid,user,args | sort -r -k1 | less

EDIT2:

In realtion to your comments and the bounty description (How can I guess which thread eats the battery?) I found an interesting page:

http://ziyang.eecs.umich.edu/projects/powertutor/

As stated there:

You can use PowerTutor to monitor the power consumption of any application.

Try this for an instance and see if it meets your requirements.

FINAL EDIT:

Check out the Systrace documentation on the developer.android.com site:

http://developer.android.com/tools/debugging/systrace.html http://developer.android.com/tools/help/systrace.html

I'm sorry if you already tried that, but that's one concrete method to measure the performance.