pstack – get backtrace stack of process for debugging purposes
bash-3.2# pstack 706
706: /usr/dt/bin/dsdm
fedcc3e5 pollsys (8046b60, 1, 0, 0)
fed7559a pselect (4, 8046c00, fee323d8, fee323d8, 0, 0) + 18e
fed75890 select (4, 8046c00, 0, 0, 0) + 82
fee5ab6b _XWaitForReadable (80651d0) + cf
fee5a991 _XRead (80651d0, 8046cf0, 20) + a9
fee89811 _XReadEvents (80651d0) + 1e9
fee65b12 XNextEvent (80651d0, 80475a0) + 46
08052976 main (1, 80476a0, 80476a8) + 1cc
080517fa ???????? (1, 80477b0, 0, 80477c1, 80477d4, 8047808)
This command can sometimes be very helpful for debugging daemons. You can see the function call stack by thread, in real-time
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