1*387f9dfdSAndroid Build Coastguard WorkerDemonstrations of threadsnoop, the Linux BCC/eBPF version. 2*387f9dfdSAndroid Build Coastguard Worker 3*387f9dfdSAndroid Build Coastguard Worker 4*387f9dfdSAndroid Build Coastguard WorkerTracing new threads via phtread_create(): 5*387f9dfdSAndroid Build Coastguard Worker 6*387f9dfdSAndroid Build Coastguard Worker# ./threadsnoop 7*387f9dfdSAndroid Build Coastguard WorkerAttaching 2 probes... 8*387f9dfdSAndroid Build Coastguard WorkerTIME(ms) PID COMM FUNC 9*387f9dfdSAndroid Build Coastguard Worker1938 28549 dockerd threadentry 10*387f9dfdSAndroid Build Coastguard Worker1939 28549 dockerd threadentry 11*387f9dfdSAndroid Build Coastguard Worker1939 28549 dockerd threadentry 12*387f9dfdSAndroid Build Coastguard Worker1940 28549 dockerd threadentry 13*387f9dfdSAndroid Build Coastguard Worker1949 28549 dockerd threadentry 14*387f9dfdSAndroid Build Coastguard Worker1958 28549 dockerd threadentry 15*387f9dfdSAndroid Build Coastguard Worker1939 28549 dockerd threadentry 16*387f9dfdSAndroid Build Coastguard Worker1950 28549 dockerd threadentry 17*387f9dfdSAndroid Build Coastguard Worker2013 28579 docker-containe 0x562f30f2e710L 18*387f9dfdSAndroid Build Coastguard Worker2036 28549 dockerd threadentry 19*387f9dfdSAndroid Build Coastguard Worker2083 28579 docker-containe 0x562f30f2e710L 20*387f9dfdSAndroid Build Coastguard Worker2116 629 systemd-journal 0x7fb7114955c0L 21*387f9dfdSAndroid Build Coastguard Worker2116 629 systemd-journal 0x7fb7114955c0L 22*387f9dfdSAndroid Build Coastguard Worker[...] 23*387f9dfdSAndroid Build Coastguard Worker 24*387f9dfdSAndroid Build Coastguard WorkerThe output shows a dockerd process creating several threads with the start 25*387f9dfdSAndroid Build Coastguard Workerroutine threadentry(), and docker-containe (truncated) and systemd-journal 26*387f9dfdSAndroid Build Coastguard Workeralso starting threads: in their cases, the function had no symbol information 27*387f9dfdSAndroid Build Coastguard Workeravailable, so their addresses are printed in hex. 28