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$ pwd: /usr/share/doc/bpftrace/examples/
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File: //usr/share/doc/bpftrace/examples/syncsnoop_example.txt
Demonstrations of syncsnoop, the Linux bpftrace/eBPF version.


Tracing file system sync events:

# ./syncsnoop.bt
Attaching 7 probes...
Tracing sync syscalls... Hit Ctrl-C to end.
TIME      PID    COMM             EVENT
02:02:17  27933  sync             tracepoint:syscalls:sys_enter_sync
02:03:43  27936  sync             tracepoint:syscalls:sys_enter_sync

The output shows calls to the sync() syscall (traced via its tracepoint),
along with various details.


There is another version of this tool in bcc: https://github.com/iovisor/bcc
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