Can someone explain ActivityManager: Start proc 27854 (class)/u0a66 for service?

Question

Can someone please explain what is:

ActivityManager?

27854?

u0a66?

Answer 1

ActivityManager?

ActivityManager is one of the system services started by the system_server process during Android boot up. ActivityManager is responsible for managing the application components (Activities, Services, BroadcastReceivers)

27854?

This is the Process Identifier (PID).

u0a66?

This is the User Identifier (UID). u0 means the system supports multiple users (0 is for "primary" user), a66 - is the application ID (66) set on its installation.