monkeyrunner运行时的提示，是什么意思

130515 19:43:55.944:I [pool-1-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] Error starting command: monkey --port 12345
130515 19:43:55.944:I [pool-1-thread-1] [com.android.chimpchat.adb.AdbChimpDevice]com.android.ddmlib.ShellCommandUnresponsiveException
130515 19:43:55.944:I [pool-1-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at com.android.ddmlib.AdbHelper.executeRemoteCommand(AdbHelper.java:408)
130515 19:43:55.944:I [pool-1-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at com.android.ddmlib.Device.executeShellCommand(Device.java:453)
130515 19:43:55.944:I [pool-1-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at com.android.chimpchat.adb.AdbChimpDevice$1.run(AdbChimpDevice.java:105)
130515 19:43:55.944:I [pool-1-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
130515 19:43:55.944:I [pool-1-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
130515 19:43:55.944:I [pool-1-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at java.util.concurrent.FutureTask.run(Unknown Source)
130515 19:43:55.944:I [pool-1-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
130515 19:43:55.944:I [pool-1-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
130515 19:43:55.944:I [pool-1-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at java.lang.Thread.run(Unknown Source)
130515 19:43:57.757:I [pool-2-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] Error starting command: monkey --port 12345
130515 19:43:57.757:I [pool-2-thread-1] [com.android.chimpchat.adb.AdbChimpDevice]com.android.ddmlib.ShellCommandUnresponsiveException
130515 19:43:57.757:I [pool-2-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at com.android.ddmlib.AdbHelper.executeRemoteCommand(AdbHelper.java:408)
130515 19:43:57.757:I [pool-2-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at com.android.ddmlib.Device.executeShellCommand(Device.java:453)
130515 19:43:57.757:I [pool-2-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at com.android.chimpchat.adb.AdbChimpDevice$1.run(AdbChimpDevice.java:105)
130515 19:43:57.757:I [pool-2-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
130515 19:43:57.757:I [pool-2-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
130515 19:43:57.757:I [pool-2-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at java.util.concurrent.FutureTask.run(Unknown Source)
130515 19:43:57.757:I [pool-2-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
130515 19:43:57.757:I [pool-2-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
130515 19:43:57.757:I [pool-2-thread-1] [com.android.chimpchat.adb.AdbChimpDevice] at java.lang.Thread.run(Unknown Source)
这段提示是什么意思Error starting command: monkey --port 12345
monkey --port 12345是干嘛的 

补充：移动开发 ,  Android