Archive for August, 2013
Latency Numbers Every Programmer Should Know (Berkely)
August 29th, 2013 by mhyunProcessing Binaries
August 29th, 2013 by mhyunProcessing Bytecodes
August 29th, 2013 by mhyunInject touch events
August 29th, 2013 by mhyun#!/usr/bin/env python
import os
os.system(‘adb shell sendevent /dev/input/event1 3 57 100’)
os.system(‘adb shell sendevent /dev/input/event1 3 48 15’)
os.system(‘adb shell sendevent /dev/input/event1 3 58a 191’)
os.system(‘adb shell sendevent /dev/input/event1 3 53 347’)
os.system(‘adb shell sendevent /dev/input/event1 3 54 482’)
os.system(‘adb shell sendevent /dev/input/event1 0 0 0’)
os.system(‘adb shell sendevent /dev/input/event1 3 57 0’)
os.system(‘adb shell sendevent /dev/input/event1 0 0 0’)
event1 can be changed. Run getevent
Change loglevel
August 29th, 2013 by mhyunecho 3 > /proc/sys/kernel/printk
The number, 3, can be changed.
Android cgroup
August 29th, 2013 by mhyun/dev/cpuctl –> /apps –> /bg_non_interactive
Diable cpu DVFS
August 29th, 2013 by mhyunecho performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
Disable a CPU core
August 29th, 2013 by mhyunecho 0 > /sys/devices/system/cpu/cpu1/online
Where, ‘cpu1’ can be replaced with ‘cpu0’.
Make the device writable
August 29th, 2013 by mhyunmount -o remount -rw -t ext4 /dev/block/platform/omap/omap_hsmmc.0/by-name/system /system/
The path may be different from device to device
Or, simply type after rooting
adb remount