Android Log

main log $adb shell logcat -b main -v threadtime
system log $ adb shell logcat -b system -d *:i
kernel log $ adb shell dmesg (or adb shell cat /proc/kmsg)


system app
/system/app
user app(internal storage)
/data/app
user app(external)
/mnt/asec
/mnt/secure/asec

set system log level per application

       adb shell setprop log.tag.XXXX VERBOSE