Systrace在Android模擬器

Question

我試圖使用systrace在Android 4.2（AVD 17）模擬器

我已經啓用USB debuggimg並在跟蹤選項激活的WebView和folloed這裏本指南http://www.youtube.com/watch?feature=player_embedded&v=Q8m9sHdyXnE#t=31m15s

但是，當我嘗試啓動android的tools目錄中我看到下面的輸出

error opening /sys/kernel/debug/tracing/options/overwrite: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/sched/sched_switch/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/power/cpu_frequency/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/power/cpu_idle/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/buffer_size_kb: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/trace_clock: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/workqueue/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/ext4/ext4_sync_file_enter/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/ext4/ext4_sync_file_exit/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/block/block_rq_issue/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/block/block_rq_complete/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/tracing_on: No such file or directory (2) 
error: unable to start trace 
error opening /sys/kernel/debug/tracing/tracing_on: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/options/overwrite: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/sched/sched_switch/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/power/cpu_frequency/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/trace_clock: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/workqueue/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/ext4/ext4_sync_file_enter/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/ext4/ext4_sync_file_exit/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/block/block_rq_issue/enable: No such file or directory (2) 
error opening /sys/kernel/debug/tracing/events/block/block_rq_complete/enable: No such file or directory (2) 
unable to start tracing 
error opening /sys/kernel/debug/tracing/buffer_size_kb: No such file or directory (2) 

任何人都知道我需要做的就是跟蹤工作使用./systrace.py跟蹤？

Answer 1

systrace在仿真器上不支持。它僅支持設備。

更多細節：

Unable to run systrace tool on android emulator

Error running systrace tool in ADB using a Jelly Bean 4.1 emulator on Windows 7

對於設備更新您的SDK到最新版本。

systrace文件路徑是android-sdk\tools\systrace\systrace.py。最新的android 4.2+ android-sdk\platform-tools\systrace\systrace.py。

root並使用以下命令重新裝入設備。

adb root 
adb remount