com.xxx消息中的ANR是什么意思

Question

我有一个应用程序在一个设备上运行正常但在另一个设备中我在我的logcat中得到以下内容：

    01-02 02:42:16.800: E/ActivityManager(1819): ANR in com.tfl.extprotocolservice
01-02 02:42:16.800: E/ActivityManager(1819): PID: 4516
01-02 02:42:16.800: E/ActivityManager(1819): Reason: Executing service com.tfl.extprotocolservice/.ExtProtocolService
01-02 02:42:16.800: E/ActivityManager(1819): Load: 2.01 / 2.07 / 2.08
01-02 02:42:16.800: E/ActivityManager(1819): CPU usage from 9304ms to 0ms ago:
01-02 02:42:16.800: E/ActivityManager(1819):   0.3% 4516/com.tfl.extprotocolservice: 0.3% user + 0% kernel / faults: 353 minor
01-02 02:42:16.800: E/ActivityManager(1819):   0.2% 1819/system_server: 0.2% user + 0% kernel / faults: 4 minor
01-02 02:42:16.800: E/ActivityManager(1819):   0.2% 1877/com.android.systemui: 0.2% user + 0% kernel
01-02 02:42:16.800: E/ActivityManager(1819):   0.1% 1459/surfaceflinger: 0.1% user + 0% kernel
01-02 02:42:16.800: E/ActivityManager(1819):   0.1% 1470/adbd: 0% user + 0.1% kernel
01-02 02:42:16.800: E/ActivityManager(1819):   0.1% 1541/ksdioirqd/mmc1: 0% user + 0.1% kernel
01-02 02:42:16.800: E/ActivityManager(1819): 0.4% TOTAL: 0.2% user + 0.1% kernel
01-02 02:42:16.800: E/ActivityManager(1819): CPU usage from 1978ms to 2491ms later:
01-02 02:42:16.800: E/ActivityManager(1819):   13% 1819/system_server: 3.9% user + 9.8% kernel
01-02 02:42:16.800: E/ActivityManager(1819):     7.8% 1835/android.bg: 0% user + 7.8% kernel
01-02 02:42:16.800: E/ActivityManager(1819):     1.9% 1819/system_server: 1.9% user + 0% kernel
01-02 02:42:16.800: E/ActivityManager(1819):     1.9% 1834/ActivityManager: 1.9% user + 0% kernel
01-02 02:42:16.800: E/ActivityManager(1819):   2.8% 991/mmcqd/0: 0% user + 2.8% kernel
01-02 02:42:16.800: E/ActivityManager(1819): 4.2% TOTAL: 0.5% user + 3.7% kernel

在我的屏幕上

什么都没有出现，没有错误信息，没有。 这是什么意思 ？